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Finding the Fourth Proportional to 359,471.20, 539,808.32 and 345,167.68

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Solution

The fourth proportional to 359,471.20, 539,808.32 and 345,167.68 is: 518,329.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,471.20 : 539,808.32 = 345,167.68 : x
  2. Step 2: Convert to fraction form
    359,471.20/539,808.32 = 345,167.68/x
  3. Step 3: Cross multiply
    359,471.20x = 539,808.32 × 345,167.68
  4. Step 4: Simplify right side
    359,471.20x = 186,324,385,459.10
  5. Step 5: Solve for x
    x = 186,324,385,459.10/359,471.20
  6. Step 6: Final answer
    x = 518,329.11

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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.