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Finding the Fourth Proportional to 359,414.40, 538,862.40 and 201,691.20

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Solution

The fourth proportional to 359,414.40, 538,862.40 and 201,691.20 is: 302,391.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,414.40 : 538,862.40 = 201,691.20 : x
  2. Step 2: Convert to fraction form
    359,414.40/538,862.40 = 201,691.20/x
  3. Step 3: Cross multiply
    359,414.40x = 538,862.40 × 201,691.20
  4. Step 4: Simplify right side
    359,414.40x = 108,683,804,090.88
  5. Step 5: Solve for x
    x = 108,683,804,090.88/359,414.40
  6. Step 6: Final answer
    x = 302,391.35

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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.