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Finding the Fourth Proportional to 424,721.46, 636,515.98 and 158,213.64

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Solution

The fourth proportional to 424,721.46, 636,515.98 and 158,213.64 is: 237,109.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,721.46 : 636,515.98 = 158,213.64 : x
  2. Step 2: Convert to fraction form
    424,721.46/636,515.98 = 158,213.64/x
  3. Step 3: Cross multiply
    424,721.46x = 636,515.98 × 158,213.64
  4. Step 4: Simplify right side
    424,721.46x = 100,705,510,113.97
  5. Step 5: Solve for x
    x = 100,705,510,113.97/424,721.46
  6. Step 6: Final answer
    x = 237,109.54

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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.