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Finding the Fourth Proportional to 218,886.49, 328,024.77 and 122,737.47

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Solution

The fourth proportional to 218,886.49, 328,024.77 and 122,737.47 is: 183,935.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,886.49 : 328,024.77 = 122,737.47 : x
  2. Step 2: Convert to fraction form
    218,886.49/328,024.77 = 122,737.47/x
  3. Step 3: Cross multiply
    218,886.49x = 328,024.77 × 122,737.47
  4. Step 4: Simplify right side
    218,886.49x = 40,260,930,367.13
  5. Step 5: Solve for x
    x = 40,260,930,367.13/218,886.49
  6. Step 6: Final answer
    x = 183,935.20

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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.