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Finding the Fourth Proportional to 318,181.77, 477,147.59 and 115,729.82

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Solution

The fourth proportional to 318,181.77, 477,147.59 and 115,729.82 is: 173,549.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,181.77 : 477,147.59 = 115,729.82 : x
  2. Step 2: Convert to fraction form
    318,181.77/477,147.59 = 115,729.82/x
  3. Step 3: Cross multiply
    318,181.77x = 477,147.59 × 115,729.82
  4. Step 4: Simplify right side
    318,181.77x = 55,220,204,704.13
  5. Step 5: Solve for x
    x = 55,220,204,704.13/318,181.77
  6. Step 6: Final answer
    x = 173,549.24

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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.