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Finding the Fourth Proportional to 359,472.20, 539,809.82 and 345,168.68

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Solution

The fourth proportional to 359,472.20, 539,809.82 and 345,168.68 is: 518,330.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,472.20 : 539,809.82 = 345,168.68 : x
  2. Step 2: Convert to fraction form
    359,472.20/539,809.82 = 345,168.68/x
  3. Step 3: Cross multiply
    359,472.20x = 539,809.82 × 345,168.68
  4. Step 4: Simplify right side
    359,472.20x = 186,325,443,020.44
  5. Step 5: Solve for x
    x = 186,325,443,020.44/359,472.20
  6. Step 6: Final answer
    x = 518,330.61

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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.