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Finding the Fourth Proportional to 288,410.60, 432,616.88 and 88,729.64

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Solution

The fourth proportional to 288,410.60, 432,616.88 and 88,729.64 is: 133,094.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,410.60 : 432,616.88 = 88,729.64 : x
  2. Step 2: Convert to fraction form
    288,410.60/432,616.88 = 88,729.64/x
  3. Step 3: Cross multiply
    288,410.60x = 432,616.88 × 88,729.64
  4. Step 4: Simplify right side
    288,410.60x = 38,385,940,020.32
  5. Step 5: Solve for x
    x = 38,385,940,020.32/288,410.60
  6. Step 6: Final answer
    x = 133,094.76

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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.