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Finding the Fourth Proportional to 424,738.08, 636,445.98 and 158,427

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Solution

The fourth proportional to 424,738.08, 636,445.98 and 158,427 is: 237,393.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,738.08 : 636,445.98 = 158,427 : x
  2. Step 2: Convert to fraction form
    424,738.08/636,445.98 = 158,427/x
  3. Step 3: Cross multiply
    424,738.08x = 636,445.98 × 158,427
  4. Step 4: Simplify right side
    424,738.08x = 100,830,227,273.46
  5. Step 5: Solve for x
    x = 100,830,227,273.46/424,738.08
  6. Step 6: Final answer
    x = 237,393.90

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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.