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Finding the Fourth Proportional to 318,358.15, 477,372.89 and 93,689.42

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Solution

The fourth proportional to 318,358.15, 477,372.89 and 93,689.42 is: 140,485.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,358.15 : 477,372.89 = 93,689.42 : x
  2. Step 2: Convert to fraction form
    318,358.15/477,372.89 = 93,689.42/x
  3. Step 3: Cross multiply
    318,358.15x = 477,372.89 × 93,689.42
  4. Step 4: Simplify right side
    318,358.15x = 44,724,787,035.18
  5. Step 5: Solve for x
    x = 44,724,787,035.18/318,358.15
  6. Step 6: Final answer
    x = 140,485.76

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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.