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Finding the Fourth Proportional to 835,394.80, 1,253,092.20 and 204,300.40

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Solution

The fourth proportional to 835,394.80, 1,253,092.20 and 204,300.40 is: 306,450.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,394.80 : 1,253,092.20 = 204,300.40 : x
  2. Step 2: Convert to fraction form
    835,394.80/1,253,092.20 = 204,300.40/x
  3. Step 3: Cross multiply
    835,394.80x = 1,253,092.20 × 204,300.40
  4. Step 4: Simplify right side
    835,394.80x = 256,007,237,696.88
  5. Step 5: Solve for x
    x = 256,007,237,696.88/835,394.80
  6. Step 6: Final answer
    x = 306,450.60

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.