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Finding the Fourth Proportional to 425,636.27, 638,642.46 and 223,184.03

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Solution

The fourth proportional to 425,636.27, 638,642.46 and 223,184.03 is: 334,874.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,636.27 : 638,642.46 = 223,184.03 : x
  2. Step 2: Convert to fraction form
    425,636.27/638,642.46 = 223,184.03/x
  3. Step 3: Cross multiply
    425,636.27x = 638,642.46 × 223,184.03
  4. Step 4: Simplify right side
    425,636.27x = 142,534,797,951.91
  5. Step 5: Solve for x
    x = 142,534,797,951.91/425,636.27
  6. Step 6: Final answer
    x = 334,874.65

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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.