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Finding the Fourth Proportional to 218,139.52, 301,027.44 and 122,645.92

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Solution

The fourth proportional to 218,139.52, 301,027.44 and 122,645.92 is: 169,248.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,139.52 : 301,027.44 = 122,645.92 : x
  2. Step 2: Convert to fraction form
    218,139.52/301,027.44 = 122,645.92/x
  3. Step 3: Cross multiply
    218,139.52x = 301,027.44 × 122,645.92
  4. Step 4: Simplify right side
    218,139.52x = 36,919,787,324.04
  5. Step 5: Solve for x
    x = 36,919,787,324.04/218,139.52
  6. Step 6: Final answer
    x = 169,248.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.