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Finding the Fourth Proportional to 323,517.60, 485,329.86 and 146,020.68

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Solution

The fourth proportional to 323,517.60, 485,329.86 and 146,020.68 is: 219,055.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,517.60 : 485,329.86 = 146,020.68 : x
  2. Step 2: Convert to fraction form
    323,517.60/485,329.86 = 146,020.68/x
  3. Step 3: Cross multiply
    323,517.60x = 485,329.86 × 146,020.68
  4. Step 4: Simplify right side
    323,517.60x = 70,868,196,181.50
  5. Step 5: Solve for x
    x = 70,868,196,181.50/323,517.60
  6. Step 6: Final answer
    x = 219,055.15

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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.