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Finding the Fourth Proportional to 345,092.80, 517,930.80 and 134,881.60

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Solution

The fourth proportional to 345,092.80, 517,930.80 and 134,881.60 is: 202,436.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,092.80 : 517,930.80 = 134,881.60 : x
  2. Step 2: Convert to fraction form
    345,092.80/517,930.80 = 134,881.60/x
  3. Step 3: Cross multiply
    345,092.80x = 517,930.80 × 134,881.60
  4. Step 4: Simplify right side
    345,092.80x = 69,859,334,993.28
  5. Step 5: Solve for x
    x = 69,859,334,993.28/345,092.80
  6. Step 6: Final answer
    x = 202,436.37

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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.