Home / 221,531.40-332,297.10-115,243.20

Finding the Fourth Proportional to 221,531.40, 332,297.10 and 115,243.20

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Solution

The fourth proportional to 221,531.40, 332,297.10 and 115,243.20 is: 172,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,531.40 : 332,297.10 = 115,243.20 : x
  2. Step 2: Convert to fraction form
    221,531.40/332,297.10 = 115,243.20/x
  3. Step 3: Cross multiply
    221,531.40x = 332,297.10 × 115,243.20
  4. Step 4: Simplify right side
    221,531.40x = 38,294,981,154.72
  5. Step 5: Solve for x
    x = 38,294,981,154.72/221,531.40
  6. Step 6: Final answer
    x = 172,864.80

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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.