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Finding the Fourth Proportional to 660,325.32, 990,634.86 and 239,591.88

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Solution

The fourth proportional to 660,325.32, 990,634.86 and 239,591.88 is: 359,441.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,325.32 : 990,634.86 = 239,591.88 : x
  2. Step 2: Convert to fraction form
    660,325.32/990,634.86 = 239,591.88/x
  3. Step 3: Cross multiply
    660,325.32x = 990,634.86 × 239,591.88
  4. Step 4: Simplify right side
    660,325.32x = 237,348,068,500.94
  5. Step 5: Solve for x
    x = 237,348,068,500.94/660,325.32
  6. Step 6: Final answer
    x = 359,441.11

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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.