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Finding the Fourth Proportional to 438,674.92, 658,012.38 and 251,805.16

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Solution

The fourth proportional to 438,674.92, 658,012.38 and 251,805.16 is: 377,707.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,674.92 : 658,012.38 = 251,805.16 : x
  2. Step 2: Convert to fraction form
    438,674.92/658,012.38 = 251,805.16/x
  3. Step 3: Cross multiply
    438,674.92x = 658,012.38 × 251,805.16
  4. Step 4: Simplify right side
    438,674.92x = 165,690,912,627.88
  5. Step 5: Solve for x
    x = 165,690,912,627.88/438,674.92
  6. Step 6: Final answer
    x = 377,707.74

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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.