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Finding the Fourth Proportional to 323,867.60, 485,655.60 and 124,121.60

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Solution

The fourth proportional to 323,867.60, 485,655.60 and 124,121.60 is: 186,126.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,867.60 : 485,655.60 = 124,121.60 : x
  2. Step 2: Convert to fraction form
    323,867.60/485,655.60 = 124,121.60/x
  3. Step 3: Cross multiply
    323,867.60x = 485,655.60 × 124,121.60
  4. Step 4: Simplify right side
    323,867.60x = 60,280,350,120.96
  5. Step 5: Solve for x
    x = 60,280,350,120.96/323,867.60
  6. Step 6: Final answer
    x = 186,126.52

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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.