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Finding the Fourth Proportional to 359,421.60, 539,132.40 and 329,095.20

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Solution

The fourth proportional to 359,421.60, 539,132.40 and 329,095.20 is: 493,642.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,421.60 : 539,132.40 = 329,095.20 : x
  2. Step 2: Convert to fraction form
    359,421.60/539,132.40 = 329,095.20/x
  3. Step 3: Cross multiply
    359,421.60x = 539,132.40 × 329,095.20
  4. Step 4: Simplify right side
    359,421.60x = 177,425,885,004.48
  5. Step 5: Solve for x
    x = 177,425,885,004.48/359,421.60
  6. Step 6: Final answer
    x = 493,642.80

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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.