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Finding the Fourth Proportional to 438,073.76, 657,010.20 and 122,562.56

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Solution

The fourth proportional to 438,073.76, 657,010.20 and 122,562.56 is: 183,815.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,073.76 : 657,010.20 = 122,562.56 : x
  2. Step 2: Convert to fraction form
    438,073.76/657,010.20 = 122,562.56/x
  3. Step 3: Cross multiply
    438,073.76x = 657,010.20 × 122,562.56
  4. Step 4: Simplify right side
    438,073.76x = 80,524,852,058.11
  5. Step 5: Solve for x
    x = 80,524,852,058.11/438,073.76
  6. Step 6: Final answer
    x = 183,815.74

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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.