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Finding the Fourth Proportional to 218,134.62, 301,023.95 and 122,641.70

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Solution

The fourth proportional to 218,134.62, 301,023.95 and 122,641.70 is: 169,244.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,134.62 : 301,023.95 = 122,641.70 : x
  2. Step 2: Convert to fraction form
    218,134.62/301,023.95 = 122,641.70/x
  3. Step 3: Cross multiply
    218,134.62x = 301,023.95 × 122,641.70
  4. Step 4: Simplify right side
    218,134.62x = 36,918,086,850.39
  5. Step 5: Solve for x
    x = 36,918,086,850.39/218,134.62
  6. Step 6: Final answer
    x = 169,244.51

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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.