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Finding the Fourth Proportional to 383,045.80, 574,827.90 and 172,575.40

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Solution

The fourth proportional to 383,045.80, 574,827.90 and 172,575.40 is: 258,979.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,045.80 : 574,827.90 = 172,575.40 : x
  2. Step 2: Convert to fraction form
    383,045.80/574,827.90 = 172,575.40/x
  3. Step 3: Cross multiply
    383,045.80x = 574,827.90 × 172,575.40
  4. Step 4: Simplify right side
    383,045.80x = 99,201,154,773.66
  5. Step 5: Solve for x
    x = 99,201,154,773.66/383,045.80
  6. Step 6: Final answer
    x = 258,979.88

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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.