Home / 260,074.71-390,224.75-91,715.33

Finding the Fourth Proportional to 260,074.71, 390,224.75 and 91,715.33

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Solution

The fourth proportional to 260,074.71, 390,224.75 and 91,715.33 is: 137,612.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,074.71 : 390,224.75 = 91,715.33 : x
  2. Step 2: Convert to fraction form
    260,074.71/390,224.75 = 91,715.33/x
  3. Step 3: Cross multiply
    260,074.71x = 390,224.75 × 91,715.33
  4. Step 4: Simplify right side
    260,074.71x = 35,789,591,720.42
  5. Step 5: Solve for x
    x = 35,789,591,720.42/260,074.71
  6. Step 6: Final answer
    x = 137,612.73

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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.