Home / 318,261.80-477,357-81,610.04

Finding the Fourth Proportional to 318,261.80, 477,357 and 81,610.04

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Solution

The fourth proportional to 318,261.80, 477,357 and 81,610.04 is: 122,405.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,261.80 : 477,357 = 81,610.04 : x
  2. Step 2: Convert to fraction form
    318,261.80/477,357 = 81,610.04/x
  3. Step 3: Cross multiply
    318,261.80x = 477,357 × 81,610.04
  4. Step 4: Simplify right side
    318,261.80x = 38,957,123,864.28
  5. Step 5: Solve for x
    x = 38,957,123,864.28/318,261.80
  6. Step 6: Final answer
    x = 122,405.91

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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.