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Finding the Fourth Proportional to 323,428.80, 485,143.20 and 244,113.60

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Solution

The fourth proportional to 323,428.80, 485,143.20 and 244,113.60 is: 366,170.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,428.80 : 485,143.20 = 244,113.60 : x
  2. Step 2: Convert to fraction form
    323,428.80/485,143.20 = 244,113.60/x
  3. Step 3: Cross multiply
    323,428.80x = 485,143.20 × 244,113.60
  4. Step 4: Simplify right side
    323,428.80x = 118,430,053,067.52
  5. Step 5: Solve for x
    x = 118,430,053,067.52/323,428.80
  6. Step 6: Final answer
    x = 366,170.40

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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.