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Finding the Fourth Proportional to 318,215.93, 477,531.56 and 118,695.92

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Solution

The fourth proportional to 318,215.93, 477,531.56 and 118,695.92 is: 178,121.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,215.93 : 477,531.56 = 118,695.92 : x
  2. Step 2: Convert to fraction form
    318,215.93/477,531.56 = 118,695.92/x
  3. Step 3: Cross multiply
    318,215.93x = 477,531.56 × 118,695.92
  4. Step 4: Simplify right side
    318,215.93x = 56,681,049,333.80
  5. Step 5: Solve for x
    x = 56,681,049,333.80/318,215.93
  6. Step 6: Final answer
    x = 178,121.34

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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.