Home / 259,743.40-389,615.10-82,304.80

Finding the Fourth Proportional to 259,743.40, 389,615.10 and 82,304.80

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Solution

The fourth proportional to 259,743.40, 389,615.10 and 82,304.80 is: 123,457.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,743.40 : 389,615.10 = 82,304.80 : x
  2. Step 2: Convert to fraction form
    259,743.40/389,615.10 = 82,304.80/x
  3. Step 3: Cross multiply
    259,743.40x = 389,615.10 × 82,304.80
  4. Step 4: Simplify right side
    259,743.40x = 32,067,192,882.48
  5. Step 5: Solve for x
    x = 32,067,192,882.48/259,743.40
  6. Step 6: Final answer
    x = 123,457.20

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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.