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Finding the Fourth Proportional to 288,063.30, 431,110.80 and 252,633.90

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Solution

The fourth proportional to 288,063.30, 431,110.80 and 252,633.90 is: 378,087.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,063.30 : 431,110.80 = 252,633.90 : x
  2. Step 2: Convert to fraction form
    288,063.30/431,110.80 = 252,633.90/x
  3. Step 3: Cross multiply
    288,063.30x = 431,110.80 × 252,633.90
  4. Step 4: Simplify right side
    288,063.30x = 108,913,202,736.12
  5. Step 5: Solve for x
    x = 108,913,202,736.12/288,063.30
  6. Step 6: Final answer
    x = 378,087.74

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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.