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Finding the Fourth Proportional to 438,520.64, 657,726.28 and 123,002.15

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Solution

The fourth proportional to 438,520.64, 657,726.28 and 123,002.15 is: 184,487.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,520.64 : 657,726.28 = 123,002.15 : x
  2. Step 2: Convert to fraction form
    438,520.64/657,726.28 = 123,002.15/x
  3. Step 3: Cross multiply
    438,520.64x = 657,726.28 × 123,002.15
  4. Step 4: Simplify right side
    438,520.64x = 80,901,742,955.37
  5. Step 5: Solve for x
    x = 80,901,742,955.37/438,520.64
  6. Step 6: Final answer
    x = 184,487.88

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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.