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Finding the Fourth Proportional to 200,728.20, 301,092.30 and 121,866.60

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Solution

The fourth proportional to 200,728.20, 301,092.30 and 121,866.60 is: 182,799.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,728.20 : 301,092.30 = 121,866.60 : x
  2. Step 2: Convert to fraction form
    200,728.20/301,092.30 = 121,866.60/x
  3. Step 3: Cross multiply
    200,728.20x = 301,092.30 × 121,866.60
  4. Step 4: Simplify right side
    200,728.20x = 36,693,094,887.18
  5. Step 5: Solve for x
    x = 36,693,094,887.18/200,728.20
  6. Step 6: Final answer
    x = 182,799.90

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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.