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Finding the Fourth Proportional to 318,425.28, 477,708.96 and 96,826.56

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Solution

The fourth proportional to 318,425.28, 477,708.96 and 96,826.56 is: 145,261.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,425.28 : 477,708.96 = 96,826.56 : x
  2. Step 2: Convert to fraction form
    318,425.28/477,708.96 = 96,826.56/x
  3. Step 3: Cross multiply
    318,425.28x = 477,708.96 × 96,826.56
  4. Step 4: Simplify right side
    318,425.28x = 46,254,915,277.98
  5. Step 5: Solve for x
    x = 46,254,915,277.98/318,425.28
  6. Step 6: Final answer
    x = 145,261.44

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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.