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Finding the Fourth Proportional to 288,693.15, 433,011.88 and 88,959.90

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Solution

The fourth proportional to 288,693.15, 433,011.88 and 88,959.90 is: 133,431.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,693.15 : 433,011.88 = 88,959.90 : x
  2. Step 2: Convert to fraction form
    288,693.15/433,011.88 = 88,959.90/x
  3. Step 3: Cross multiply
    288,693.15x = 433,011.88 × 88,959.90
  4. Step 4: Simplify right side
    288,693.15x = 38,520,694,778.21
  5. Step 5: Solve for x
    x = 38,520,694,778.21/288,693.15
  6. Step 6: Final answer
    x = 133,431.28

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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.