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Finding the Fourth Proportional to 288,066.30, 431,115.30 and 252,636.90

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Solution

The fourth proportional to 288,066.30, 431,115.30 and 252,636.90 is: 378,092.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,066.30 : 431,115.30 = 252,636.90 : x
  2. Step 2: Convert to fraction form
    288,066.30/431,115.30 = 252,636.90/x
  3. Step 3: Cross multiply
    288,066.30x = 431,115.30 × 252,636.90
  4. Step 4: Simplify right side
    288,066.30x = 108,915,632,934.57
  5. Step 5: Solve for x
    x = 108,915,632,934.57/288,066.30
  6. Step 6: Final answer
    x = 378,092.24

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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.