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Finding the Fourth Proportional to 445,080.78, 667,704.84 and 178,862.40

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Solution

The fourth proportional to 445,080.78, 667,704.84 and 178,862.40 is: 268,327.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,080.78 : 667,704.84 = 178,862.40 : x
  2. Step 2: Convert to fraction form
    445,080.78/667,704.84 = 178,862.40/x
  3. Step 3: Cross multiply
    445,080.78x = 667,704.84 × 178,862.40
  4. Step 4: Simplify right side
    445,080.78x = 119,427,290,174.02
  5. Step 5: Solve for x
    x = 119,427,290,174.02/445,080.78
  6. Step 6: Final answer
    x = 268,327.22

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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.