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Finding the Fourth Proportional to 323,839.04, 485,641.96 and 136,865.12

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Solution

The fourth proportional to 323,839.04, 485,641.96 and 136,865.12 is: 205,248.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,839.04 : 485,641.96 = 136,865.12 : x
  2. Step 2: Convert to fraction form
    323,839.04/485,641.96 = 136,865.12/x
  3. Step 3: Cross multiply
    323,839.04x = 485,641.96 × 136,865.12
  4. Step 4: Simplify right side
    323,839.04x = 66,467,445,132.44
  5. Step 5: Solve for x
    x = 66,467,445,132.44/323,839.04
  6. Step 6: Final answer
    x = 205,248.40

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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.