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Finding the Fourth Proportional to 221,434.70, 332,152.05 and 81,175.10

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Solution

The fourth proportional to 221,434.70, 332,152.05 and 81,175.10 is: 121,762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,434.70 : 332,152.05 = 81,175.10 : x
  2. Step 2: Convert to fraction form
    221,434.70/332,152.05 = 81,175.10/x
  3. Step 3: Cross multiply
    221,434.70x = 332,152.05 × 81,175.10
  4. Step 4: Simplify right side
    221,434.70x = 26,962,475,873.96
  5. Step 5: Solve for x
    x = 26,962,475,873.96/221,434.70
  6. Step 6: Final answer
    x = 121,762.65

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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.