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Finding the Fourth Proportional to 359,530.38, 539,296.18 and 287,938.62

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Solution

The fourth proportional to 359,530.38, 539,296.18 and 287,938.62 is: 431,908.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,530.38 : 539,296.18 = 287,938.62 : x
  2. Step 2: Convert to fraction form
    359,530.38/539,296.18 = 287,938.62/x
  3. Step 3: Cross multiply
    359,530.38x = 539,296.18 × 287,938.62
  4. Step 4: Simplify right side
    359,530.38x = 155,284,193,704.30
  5. Step 5: Solve for x
    x = 155,284,193,704.30/359,530.38
  6. Step 6: Final answer
    x = 431,908.41

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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.