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Finding the Fourth Proportional to 323,478.96, 485,218.43 and 123,860.53

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Solution

The fourth proportional to 323,478.96, 485,218.43 and 123,860.53 is: 185,790.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,478.96 : 485,218.43 = 123,860.53 : x
  2. Step 2: Convert to fraction form
    323,478.96/485,218.43 = 123,860.53/x
  3. Step 3: Cross multiply
    323,478.96x = 485,218.43 × 123,860.53
  4. Step 4: Simplify right side
    323,478.96x = 60,099,411,905.57
  5. Step 5: Solve for x
    x = 60,099,411,905.57/323,478.96
  6. Step 6: Final answer
    x = 185,790.79

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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.