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Finding the Fourth Proportional to 318,487.52, 477,734.93 and 108,141.86

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Solution

The fourth proportional to 318,487.52, 477,734.93 and 108,141.86 is: 162,214.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,487.52 : 477,734.93 = 108,141.86 : x
  2. Step 2: Convert to fraction form
    318,487.52/477,734.93 = 108,141.86/x
  3. Step 3: Cross multiply
    318,487.52x = 477,734.93 × 108,141.86
  4. Step 4: Simplify right side
    318,487.52x = 51,663,143,917.17
  5. Step 5: Solve for x
    x = 51,663,143,917.17/318,487.52
  6. Step 6: Final answer
    x = 162,214.03

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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.