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Finding the Fourth Proportional to 318,450.66, 477,680.10 and 93,760

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Solution

The fourth proportional to 318,450.66, 477,680.10 and 93,760 is: 140,641.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,450.66 : 477,680.10 = 93,760 : x
  2. Step 2: Convert to fraction form
    318,450.66/477,680.10 = 93,760/x
  3. Step 3: Cross multiply
    318,450.66x = 477,680.10 × 93,760
  4. Step 4: Simplify right side
    318,450.66x = 44,787,286,176
  5. Step 5: Solve for x
    x = 44,787,286,176/318,450.66
  6. Step 6: Final answer
    x = 140,641.21

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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.