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Finding the Fourth Proportional to 318,487.38, 477,804.89 and 108,125.32

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Solution

The fourth proportional to 318,487.38, 477,804.89 and 108,125.32 is: 162,213.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,487.38 : 477,804.89 = 108,125.32 : x
  2. Step 2: Convert to fraction form
    318,487.38/477,804.89 = 108,125.32/x
  3. Step 3: Cross multiply
    318,487.38x = 477,804.89 × 108,125.32
  4. Step 4: Simplify right side
    318,487.38x = 51,662,806,628.81
  5. Step 5: Solve for x
    x = 51,662,806,628.81/318,487.38
  6. Step 6: Final answer
    x = 162,213.04

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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.