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Finding the Fourth Proportional to 425,348.20, 637,235.10 and 247,940.20

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Solution

The fourth proportional to 425,348.20, 637,235.10 and 247,940.20 is: 371,451.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,348.20 : 637,235.10 = 247,940.20 : x
  2. Step 2: Convert to fraction form
    425,348.20/637,235.10 = 247,940.20/x
  3. Step 3: Cross multiply
    425,348.20x = 637,235.10 × 247,940.20
  4. Step 4: Simplify right side
    425,348.20x = 157,996,198,141.02
  5. Step 5: Solve for x
    x = 157,996,198,141.02/425,348.20
  6. Step 6: Final answer
    x = 371,451.43

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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.