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Finding the Fourth Proportional to 318,072.88, 477,059.22 and 264,382.34

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Solution

The fourth proportional to 318,072.88, 477,059.22 and 264,382.34 is: 396,531.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,072.88 : 477,059.22 = 264,382.34 : x
  2. Step 2: Convert to fraction form
    318,072.88/477,059.22 = 264,382.34/x
  3. Step 3: Cross multiply
    318,072.88x = 477,059.22 × 264,382.34
  4. Step 4: Simplify right side
    318,072.88x = 126,126,032,902.18
  5. Step 5: Solve for x
    x = 126,126,032,902.18/318,072.88
  6. Step 6: Final answer
    x = 396,531.87

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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.