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Finding the Fourth Proportional to 424,375.90, 636,168.35 and 291,318.82

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Solution

The fourth proportional to 424,375.90, 636,168.35 and 291,318.82 is: 436,706.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,375.90 : 636,168.35 = 291,318.82 : x
  2. Step 2: Convert to fraction form
    424,375.90/636,168.35 = 291,318.82/x
  3. Step 3: Cross multiply
    424,375.90x = 636,168.35 × 291,318.82
  4. Step 4: Simplify right side
    424,375.90x = 185,327,812,181.22
  5. Step 5: Solve for x
    x = 185,327,812,181.22/424,375.90
  6. Step 6: Final answer
    x = 436,706.73

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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.