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Finding the Fourth Proportional to 221,491.20, 332,564.85 and 171,627.60

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Solution

The fourth proportional to 221,491.20, 332,564.85 and 171,627.60 is: 257,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,491.20 : 332,564.85 = 171,627.60 : x
  2. Step 2: Convert to fraction form
    221,491.20/332,564.85 = 171,627.60/x
  3. Step 3: Cross multiply
    221,491.20x = 332,564.85 × 171,627.60
  4. Step 4: Simplify right side
    221,491.20x = 57,077,307,049.86
  5. Step 5: Solve for x
    x = 57,077,307,049.86/221,491.20
  6. Step 6: Final answer
    x = 257,695.60

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1.5x scale

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.