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Finding the Fourth Proportional to 425,799.15, 638,156.03 and 226,215.15

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Solution

The fourth proportional to 425,799.15, 638,156.03 and 226,215.15 is: 339,034.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,799.15 : 638,156.03 = 226,215.15 : x
  2. Step 2: Convert to fraction form
    425,799.15/638,156.03 = 226,215.15/x
  3. Step 3: Cross multiply
    425,799.15x = 638,156.03 × 226,215.15
  4. Step 4: Simplify right side
    425,799.15x = 144,360,560,918.78
  5. Step 5: Solve for x
    x = 144,360,560,918.78/425,799.15
  6. Step 6: Final answer
    x = 339,034.40

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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.