Home / 260,039.16-390,112.20-82,542.24

Finding the Fourth Proportional to 260,039.16, 390,112.20 and 82,542.24

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Solution

The fourth proportional to 260,039.16, 390,112.20 and 82,542.24 is: 123,830.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,039.16 : 390,112.20 = 82,542.24 : x
  2. Step 2: Convert to fraction form
    260,039.16/390,112.20 = 82,542.24/x
  3. Step 3: Cross multiply
    260,039.16x = 390,112.20 × 82,542.24
  4. Step 4: Simplify right side
    260,039.16x = 32,200,734,839.33
  5. Step 5: Solve for x
    x = 32,200,734,839.33/260,039.16
  6. Step 6: Final answer
    x = 123,830.33

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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.