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Finding the Fourth Proportional to 218,867.80, 328,046.55 and 100,551.10

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Solution

The fourth proportional to 218,867.80, 328,046.55 and 100,551.10 is: 150,709.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,867.80 : 328,046.55 = 100,551.10 : x
  2. Step 2: Convert to fraction form
    218,867.80/328,046.55 = 100,551.10/x
  3. Step 3: Cross multiply
    218,867.80x = 328,046.55 × 100,551.10
  4. Step 4: Simplify right side
    218,867.80x = 32,985,441,453.71
  5. Step 5: Solve for x
    x = 32,985,441,453.71/218,867.80
  6. Step 6: Final answer
    x = 150,709.43

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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.