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Finding the Fourth Proportional to 218,902.45, 328,363.52 and 67,088.41

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Solution

The fourth proportional to 218,902.45, 328,363.52 and 67,088.41 is: 100,635.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,902.45 : 328,363.52 = 67,088.41 : x
  2. Step 2: Convert to fraction form
    218,902.45/328,363.52 = 67,088.41/x
  3. Step 3: Cross multiply
    218,902.45x = 328,363.52 × 67,088.41
  4. Step 4: Simplify right side
    218,902.45x = 22,029,386,123.36
  5. Step 5: Solve for x
    x = 22,029,386,123.36/218,902.45
  6. Step 6: Final answer
    x = 100,635.63

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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.