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Finding the Fourth Proportional to 288,008.04, 431,995.86 and 88,327.88

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Solution

The fourth proportional to 288,008.04, 431,995.86 and 88,327.88 is: 132,486.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,008.04 : 431,995.86 = 88,327.88 : x
  2. Step 2: Convert to fraction form
    288,008.04/431,995.86 = 88,327.88/x
  3. Step 3: Cross multiply
    288,008.04x = 431,995.86 × 88,327.88
  4. Step 4: Simplify right side
    288,008.04x = 38,157,278,482.58
  5. Step 5: Solve for x
    x = 38,157,278,482.58/288,008.04
  6. Step 6: Final answer
    x = 132,486.85

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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.