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Finding the Fourth Proportional to 318,989.44, 478,341.96 and 169,195.64

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Solution

The fourth proportional to 318,989.44, 478,341.96 and 169,195.64 is: 253,718.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,989.44 : 478,341.96 = 169,195.64 : x
  2. Step 2: Convert to fraction form
    318,989.44/478,341.96 = 169,195.64/x
  3. Step 3: Cross multiply
    318,989.44x = 478,341.96 × 169,195.64
  4. Step 4: Simplify right side
    318,989.44x = 80,933,374,061.05
  5. Step 5: Solve for x
    x = 80,933,374,061.05/318,989.44
  6. Step 6: Final answer
    x = 253,718.04

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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.