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Finding the Fourth Proportional to 486,186.54, 729,273.94 and 126,325.54

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Solution

The fourth proportional to 486,186.54, 729,273.94 and 126,325.54 is: 189,486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,186.54 : 729,273.94 = 126,325.54 : x
  2. Step 2: Convert to fraction form
    486,186.54/729,273.94 = 126,325.54/x
  3. Step 3: Cross multiply
    486,186.54x = 729,273.94 × 126,325.54
  4. Step 4: Simplify right side
    486,186.54x = 92,125,924,278.43
  5. Step 5: Solve for x
    x = 92,125,924,278.43/486,186.54
  6. Step 6: Final answer
    x = 189,486.78

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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.