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Finding the Fourth Proportional to 225,681.80, 338,522.70 and 132,139.40

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Solution

The fourth proportional to 225,681.80, 338,522.70 and 132,139.40 is: 198,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,681.80 : 338,522.70 = 132,139.40 : x
  2. Step 2: Convert to fraction form
    225,681.80/338,522.70 = 132,139.40/x
  3. Step 3: Cross multiply
    225,681.80x = 338,522.70 × 132,139.40
  4. Step 4: Simplify right side
    225,681.80x = 44,732,186,464.38
  5. Step 5: Solve for x
    x = 44,732,186,464.38/225,681.80
  6. Step 6: Final answer
    x = 198,209.10

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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.