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Finding the Fourth Proportional to 221,432.70, 331,808.85 and 165,008.10

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Solution

The fourth proportional to 221,432.70, 331,808.85 and 165,008.10 is: 247,258.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,432.70 : 331,808.85 = 165,008.10 : x
  2. Step 2: Convert to fraction form
    221,432.70/331,808.85 = 165,008.10/x
  3. Step 3: Cross multiply
    221,432.70x = 331,808.85 × 165,008.10
  4. Step 4: Simplify right side
    221,432.70x = 54,751,147,901.69
  5. Step 5: Solve for x
    x = 54,751,147,901.69/221,432.70
  6. Step 6: Final answer
    x = 247,258.64

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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.