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Finding the Fourth Proportional to 508,728.20, 763,092.30 and 243,007.70

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Solution

The fourth proportional to 508,728.20, 763,092.30 and 243,007.70 is: 364,511.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,728.20 : 763,092.30 = 243,007.70 : x
  2. Step 2: Convert to fraction form
    508,728.20/763,092.30 = 243,007.70/x
  3. Step 3: Cross multiply
    508,728.20x = 763,092.30 × 243,007.70
  4. Step 4: Simplify right side
    508,728.20x = 185,437,304,710.71
  5. Step 5: Solve for x
    x = 185,437,304,710.71/508,728.20
  6. Step 6: Final answer
    x = 364,511.55

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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.