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Finding the Fourth Proportional to 425,902.10, 638,853.15 and 238,889.30

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Solution

The fourth proportional to 425,902.10, 638,853.15 and 238,889.30 is: 358,333.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,902.10 : 638,853.15 = 238,889.30 : x
  2. Step 2: Convert to fraction form
    425,902.10/638,853.15 = 238,889.30/x
  3. Step 3: Cross multiply
    425,902.10x = 638,853.15 × 238,889.30
  4. Step 4: Simplify right side
    425,902.10x = 152,615,181,806.30
  5. Step 5: Solve for x
    x = 152,615,181,806.30/425,902.10
  6. Step 6: Final answer
    x = 358,333.95

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Similar ratio
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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.