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Finding the Fourth Proportional to 451,257.11, 676,660.31 and 147,611.64

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Solution

The fourth proportional to 451,257.11, 676,660.31 and 147,611.64 is: 221,343.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,257.11 : 676,660.31 = 147,611.64 : x
  2. Step 2: Convert to fraction form
    451,257.11/676,660.31 = 147,611.64/x
  3. Step 3: Cross multiply
    451,257.11x = 676,660.31 × 147,611.64
  4. Step 4: Simplify right side
    451,257.11x = 99,882,938,116.71
  5. Step 5: Solve for x
    x = 99,882,938,116.71/451,257.11
  6. Step 6: Final answer
    x = 221,343.74

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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.