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Finding the Fourth Proportional to 323,519.20, 485,192.40 and 98,879.20

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Solution

The fourth proportional to 323,519.20, 485,192.40 and 98,879.20 is: 148,292.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,519.20 : 485,192.40 = 98,879.20 : x
  2. Step 2: Convert to fraction form
    323,519.20/485,192.40 = 98,879.20/x
  3. Step 3: Cross multiply
    323,519.20x = 485,192.40 × 98,879.20
  4. Step 4: Simplify right side
    323,519.20x = 47,975,436,358.08
  5. Step 5: Solve for x
    x = 47,975,436,358.08/323,519.20
  6. Step 6: Final answer
    x = 148,292.39

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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.