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Finding the Fourth Proportional to 438,810.28, 658,215.42 and 154,433.86

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Solution

The fourth proportional to 438,810.28, 658,215.42 and 154,433.86 is: 231,650.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,810.28 : 658,215.42 = 154,433.86 : x
  2. Step 2: Convert to fraction form
    438,810.28/658,215.42 = 154,433.86/x
  3. Step 3: Cross multiply
    438,810.28x = 658,215.42 × 154,433.86
  4. Step 4: Simplify right side
    438,810.28x = 101,650,748,022.12
  5. Step 5: Solve for x
    x = 101,650,748,022.12/438,810.28
  6. Step 6: Final answer
    x = 231,650.79

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Similar ratio
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1.5x scale

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.