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Finding the Fourth Proportional to 218,963.11, 328,287.04 and 134,548.87

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Solution

The fourth proportional to 218,963.11, 328,287.04 and 134,548.87 is: 201,726.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,963.11 : 328,287.04 = 134,548.87 : x
  2. Step 2: Convert to fraction form
    218,963.11/328,287.04 = 134,548.87/x
  3. Step 3: Cross multiply
    218,963.11x = 328,287.04 × 134,548.87
  4. Step 4: Simplify right side
    218,963.11x = 44,170,650,267.64
  5. Step 5: Solve for x
    x = 44,170,650,267.64/218,963.11
  6. Step 6: Final answer
    x = 201,726.45

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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.