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Finding the Fourth Proportional to 221,440.60, 332,160.90 and 81,253.90

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Solution

The fourth proportional to 221,440.60, 332,160.90 and 81,253.90 is: 121,880.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,440.60 : 332,160.90 = 81,253.90 : x
  2. Step 2: Convert to fraction form
    221,440.60/332,160.90 = 81,253.90/x
  3. Step 3: Cross multiply
    221,440.60x = 332,160.90 × 81,253.90
  4. Step 4: Simplify right side
    221,440.60x = 26,989,368,552.51
  5. Step 5: Solve for x
    x = 26,989,368,552.51/221,440.60
  6. Step 6: Final answer
    x = 121,880.85

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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.