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Finding the Fourth Proportional to 425,044.78, 637,418.32 and 125,446.02

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Solution

The fourth proportional to 425,044.78, 637,418.32 and 125,446.02 is: 188,125.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,044.78 : 637,418.32 = 125,446.02 : x
  2. Step 2: Convert to fraction form
    425,044.78/637,418.32 = 125,446.02/x
  3. Step 3: Cross multiply
    425,044.78x = 637,418.32 × 125,446.02
  4. Step 4: Simplify right side
    425,044.78x = 79,961,591,319.09
  5. Step 5: Solve for x
    x = 79,961,591,319.09/425,044.78
  6. Step 6: Final answer
    x = 188,125.10

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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.