Home / 259,775.28-389,685.02-91,281.06

Finding the Fourth Proportional to 259,775.28, 389,685.02 and 91,281.06

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Solution

The fourth proportional to 259,775.28, 389,685.02 and 91,281.06 is: 136,929.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,775.28 : 389,685.02 = 91,281.06 : x
  2. Step 2: Convert to fraction form
    259,775.28/389,685.02 = 91,281.06/x
  3. Step 3: Cross multiply
    259,775.28x = 389,685.02 × 91,281.06
  4. Step 4: Simplify right side
    259,775.28x = 35,570,861,691.72
  5. Step 5: Solve for x
    x = 35,570,861,691.72/259,775.28
  6. Step 6: Final answer
    x = 136,929.36

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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.