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Finding the Fourth Proportional to 318,120.38, 477,168.11 and 107,758.32

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Solution

The fourth proportional to 318,120.38, 477,168.11 and 107,758.32 is: 161,633.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,120.38 : 477,168.11 = 107,758.32 : x
  2. Step 2: Convert to fraction form
    318,120.38/477,168.11 = 107,758.32/x
  3. Step 3: Cross multiply
    318,120.38x = 477,168.11 × 107,758.32
  4. Step 4: Simplify right side
    318,120.38x = 51,418,833,891.18
  5. Step 5: Solve for x
    x = 51,418,833,891.18/318,120.38
  6. Step 6: Final answer
    x = 161,633.26

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1.5x scale

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.