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Finding the Fourth Proportional to 218,951.84, 328,475.40 and 67,149.00

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Solution

The fourth proportional to 218,951.84, 328,475.40 and 67,149.00 is: 100,738.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,951.84 : 328,475.40 = 67,149.00 : x
  2. Step 2: Convert to fraction form
    218,951.84/328,475.40 = 67,149.00/x
  3. Step 3: Cross multiply
    218,951.84x = 328,475.40 × 67,149.00
  4. Step 4: Simplify right side
    218,951.84x = 22,056,792,656.48
  5. Step 5: Solve for x
    x = 22,056,792,656.48/218,951.84
  6. Step 6: Final answer
    x = 100,738.10

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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.