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Finding the Fourth Proportional to 438,762.75, 658,144.13 and 106,338.75

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Solution

The fourth proportional to 438,762.75, 658,144.13 and 106,338.75 is: 159,508.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,762.75 : 658,144.13 = 106,338.75 : x
  2. Step 2: Convert to fraction form
    438,762.75/658,144.13 = 106,338.75/x
  3. Step 3: Cross multiply
    438,762.75x = 658,144.13 × 106,338.75
  4. Step 4: Simplify right side
    438,762.75x = 69,986,223,572.34
  5. Step 5: Solve for x
    x = 69,986,223,572.34/438,762.75
  6. Step 6: Final answer
    x = 159,508.13

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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.