Home / 260,640.27-390,991.19-83,085.03

Finding the Fourth Proportional to 260,640.27, 390,991.19 and 83,085.03

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Solution

The fourth proportional to 260,640.27, 390,991.19 and 83,085.03 is: 124,637.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,640.27 : 390,991.19 = 83,085.03 : x
  2. Step 2: Convert to fraction form
    260,640.27/390,991.19 = 83,085.03/x
  3. Step 3: Cross multiply
    260,640.27x = 390,991.19 × 83,085.03
  4. Step 4: Simplify right side
    260,640.27x = 32,485,514,335.46
  5. Step 5: Solve for x
    x = 32,485,514,335.46/260,640.27
  6. Step 6: Final answer
    x = 124,637.36

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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.