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Finding the Fourth Proportional to 218,928.84, 328,407.10 and 92,545.53

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Solution

The fourth proportional to 218,928.84, 328,407.10 and 92,545.53 is: 138,824.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,928.84 : 328,407.10 = 92,545.53 : x
  2. Step 2: Convert to fraction form
    218,928.84/328,407.10 = 92,545.53/x
  3. Step 3: Cross multiply
    218,928.84x = 328,407.10 × 92,545.53
  4. Step 4: Simplify right side
    218,928.84x = 30,392,607,251.86
  5. Step 5: Solve for x
    x = 30,392,607,251.86/218,928.84
  6. Step 6: Final answer
    x = 138,824.14

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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.