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Finding the Fourth Proportional to 438,757.69, 658,136.53 and 106,333.69

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Solution

The fourth proportional to 438,757.69, 658,136.53 and 106,333.69 is: 159,500.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,757.69 : 658,136.53 = 106,333.69 : x
  2. Step 2: Convert to fraction form
    438,757.69/658,136.53 = 106,333.69/x
  3. Step 3: Cross multiply
    438,757.69x = 658,136.53 × 106,333.69
  4. Step 4: Simplify right side
    438,757.69x = 69,982,085,758.70
  5. Step 5: Solve for x
    x = 69,982,085,758.70/438,757.69
  6. Step 6: Final answer
    x = 159,500.53

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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.