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Finding the Fourth Proportional to 530,049.54, 731,487.87 and 303,738.78

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Solution

The fourth proportional to 530,049.54, 731,487.87 and 303,738.78 is: 419,170.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,049.54 : 731,487.87 = 303,738.78 : x
  2. Step 2: Convert to fraction form
    530,049.54/731,487.87 = 303,738.78/x
  3. Step 3: Cross multiply
    530,049.54x = 731,487.87 × 303,738.78
  4. Step 4: Simplify right side
    530,049.54x = 222,181,233,218.60
  5. Step 5: Solve for x
    x = 222,181,233,218.60/530,049.54
  6. Step 6: Final answer
    x = 419,170.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.