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Finding the Fourth Proportional to 359,416.80, 539,125.20 and 331,423.20

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Solution

The fourth proportional to 359,416.80, 539,125.20 and 331,423.20 is: 497,134.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,416.80 : 539,125.20 = 331,423.20 : x
  2. Step 2: Convert to fraction form
    359,416.80/539,125.20 = 331,423.20/x
  3. Step 3: Cross multiply
    359,416.80x = 539,125.20 × 331,423.20
  4. Step 4: Simplify right side
    359,416.80x = 178,678,598,984.64
  5. Step 5: Solve for x
    x = 178,678,598,984.64/359,416.80
  6. Step 6: Final answer
    x = 497,134.80

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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.