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Finding the Fourth Proportional to 447,689.61, 671,607.36 and 132,178.41

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Solution

The fourth proportional to 447,689.61, 671,607.36 and 132,178.41 is: 198,289.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,689.61 : 671,607.36 = 132,178.41 : x
  2. Step 2: Convert to fraction form
    447,689.61/671,607.36 = 132,178.41/x
  3. Step 3: Cross multiply
    447,689.61x = 671,607.36 × 132,178.41
  4. Step 4: Simplify right side
    447,689.61x = 88,771,992,989.10
  5. Step 5: Solve for x
    x = 88,771,992,989.10/447,689.61
  6. Step 6: Final answer
    x = 198,289.15

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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.