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Finding the Fourth Proportional to 487,020.78, 730,792.80 and 237,702.78

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Solution

The fourth proportional to 487,020.78, 730,792.80 and 237,702.78 is: 356,681.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,020.78 : 730,792.80 = 237,702.78 : x
  2. Step 2: Convert to fraction form
    487,020.78/730,792.80 = 237,702.78/x
  3. Step 3: Cross multiply
    487,020.78x = 730,792.80 × 237,702.78
  4. Step 4: Simplify right side
    487,020.78x = 173,711,480,163.98
  5. Step 5: Solve for x
    x = 173,711,480,163.98/487,020.78
  6. Step 6: Final answer
    x = 356,681.87

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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.