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Finding the Fourth Proportional to 217,483.92, 325,865.70 and 153,990.54

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Solution

The fourth proportional to 217,483.92, 325,865.70 and 153,990.54 is: 230,730.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,483.92 : 325,865.70 = 153,990.54 : x
  2. Step 2: Convert to fraction form
    217,483.92/325,865.70 = 153,990.54/x
  3. Step 3: Cross multiply
    217,483.92x = 325,865.70 × 153,990.54
  4. Step 4: Simplify right side
    217,483.92x = 50,180,235,110.48
  5. Step 5: Solve for x
    x = 50,180,235,110.48/217,483.92
  6. Step 6: Final answer
    x = 230,730.78

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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.