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Finding the Fourth Proportional to 425,249.95, 637,999.51 and 125,738.33

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Solution

The fourth proportional to 425,249.95, 637,999.51 and 125,738.33 is: 188,644.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,249.95 : 637,999.51 = 125,738.33 : x
  2. Step 2: Convert to fraction form
    425,249.95/637,999.51 = 125,738.33/x
  3. Step 3: Cross multiply
    425,249.95x = 637,999.51 × 125,738.33
  4. Step 4: Simplify right side
    425,249.95x = 80,220,990,013.27
  5. Step 5: Solve for x
    x = 80,220,990,013.27/425,249.95
  6. Step 6: Final answer
    x = 188,644.33

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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.