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Finding the Fourth Proportional to 392,430.30, 588,645.45 and 202,890.30

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Solution

The fourth proportional to 392,430.30, 588,645.45 and 202,890.30 is: 304,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,430.30 : 588,645.45 = 202,890.30 : x
  2. Step 2: Convert to fraction form
    392,430.30/588,645.45 = 202,890.30/x
  3. Step 3: Cross multiply
    392,430.30x = 588,645.45 × 202,890.30
  4. Step 4: Simplify right side
    392,430.30x = 119,430,451,944.14
  5. Step 5: Solve for x
    x = 119,430,451,944.14/392,430.30
  6. Step 6: Final answer
    x = 304,335.45

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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.