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Finding the Fourth Proportional to 359,487.60, 539,231.40 and 172,402.80

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Solution

The fourth proportional to 359,487.60, 539,231.40 and 172,402.80 is: 258,604.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,487.60 : 539,231.40 = 172,402.80 : x
  2. Step 2: Convert to fraction form
    359,487.60/539,231.40 = 172,402.80/x
  3. Step 3: Cross multiply
    359,487.60x = 539,231.40 × 172,402.80
  4. Step 4: Simplify right side
    359,487.60x = 92,965,003,207.92
  5. Step 5: Solve for x
    x = 92,965,003,207.92/359,487.60
  6. Step 6: Final answer
    x = 258,604.20

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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.