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Finding the Fourth Proportional to 383,062.08, 574,840.96 and 172,687.20

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Solution

The fourth proportional to 383,062.08, 574,840.96 and 172,687.20 is: 259,142.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,062.08 : 574,840.96 = 172,687.20 : x
  2. Step 2: Convert to fraction form
    383,062.08/574,840.96 = 172,687.20/x
  3. Step 3: Cross multiply
    383,062.08x = 574,840.96 × 172,687.20
  4. Step 4: Simplify right side
    383,062.08x = 99,267,675,827.71
  5. Step 5: Solve for x
    x = 99,267,675,827.71/383,062.08
  6. Step 6: Final answer
    x = 259,142.53

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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.