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Finding the Fourth Proportional to 218,951.34, 328,474.64 and 67,148.49

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Solution

The fourth proportional to 218,951.34, 328,474.64 and 67,148.49 is: 100,737.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,951.34 : 328,474.64 = 67,148.49 : x
  2. Step 2: Convert to fraction form
    218,951.34/328,474.64 = 67,148.49/x
  3. Step 3: Cross multiply
    218,951.34x = 328,474.64 × 67,148.49
  4. Step 4: Simplify right side
    218,951.34x = 22,056,577,478.94
  5. Step 5: Solve for x
    x = 22,056,577,478.94/218,951.34
  6. Step 6: Final answer
    x = 100,737.35

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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.