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Finding the Fourth Proportional to 359,354.25, 538,498.87 and 145,862.39

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Solution

The fourth proportional to 359,354.25, 538,498.87 and 145,862.39 is: 218,577.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,354.25 : 538,498.87 = 145,862.39 : x
  2. Step 2: Convert to fraction form
    359,354.25/538,498.87 = 145,862.39/x
  3. Step 3: Cross multiply
    359,354.25x = 538,498.87 × 145,862.39
  4. Step 4: Simplify right side
    359,354.25x = 78,546,729,406.84
  5. Step 5: Solve for x
    x = 78,546,729,406.84/359,354.25
  6. Step 6: Final answer
    x = 218,577.43

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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.