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Finding the Fourth Proportional to 221,534.40, 332,301.60 and 115,246.20

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Solution

The fourth proportional to 221,534.40, 332,301.60 and 115,246.20 is: 172,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,534.40 : 332,301.60 = 115,246.20 : x
  2. Step 2: Convert to fraction form
    221,534.40/332,301.60 = 115,246.20/x
  3. Step 3: Cross multiply
    221,534.40x = 332,301.60 × 115,246.20
  4. Step 4: Simplify right side
    221,534.40x = 38,296,496,653.92
  5. Step 5: Solve for x
    x = 38,296,496,653.92/221,534.40
  6. Step 6: Final answer
    x = 172,869.30

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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.