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Finding the Fourth Proportional to 318,113.75, 477,158.18 and 107,751.69

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Solution

The fourth proportional to 318,113.75, 477,158.18 and 107,751.69 is: 161,623.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,113.75 : 477,158.18 = 107,751.69 : x
  2. Step 2: Convert to fraction form
    318,113.75/477,158.18 = 107,751.69/x
  3. Step 3: Cross multiply
    318,113.75x = 477,158.18 × 107,751.69
  4. Step 4: Simplify right side
    318,113.75x = 51,414,599,753.57
  5. Step 5: Solve for x
    x = 51,414,599,753.57/318,113.75
  6. Step 6: Final answer
    x = 161,623.32

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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.