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Finding the Fourth Proportional to 359,705.60, 539,645.28 and 135,068.48

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Solution

The fourth proportional to 359,705.60, 539,645.28 and 135,068.48 is: 202,635.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,705.60 : 539,645.28 = 135,068.48 : x
  2. Step 2: Convert to fraction form
    359,705.60/539,645.28 = 135,068.48/x
  3. Step 3: Cross multiply
    359,705.60x = 539,645.28 × 135,068.48
  4. Step 4: Simplify right side
    359,705.60x = 72,889,067,708.77
  5. Step 5: Solve for x
    x = 72,889,067,708.77/359,705.60
  6. Step 6: Final answer
    x = 202,635.34

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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.