Home / 260,387.54-390,656.19-82,921.94

Finding the Fourth Proportional to 260,387.54, 390,656.19 and 82,921.94

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Solution

The fourth proportional to 260,387.54, 390,656.19 and 82,921.94 is: 124,406.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,387.54 : 390,656.19 = 82,921.94 : x
  2. Step 2: Convert to fraction form
    260,387.54/390,656.19 = 82,921.94/x
  3. Step 3: Cross multiply
    260,387.54x = 390,656.19 × 82,921.94
  4. Step 4: Simplify right side
    260,387.54x = 32,393,969,147.81
  5. Step 5: Solve for x
    x = 32,393,969,147.81/260,387.54
  6. Step 6: Final answer
    x = 124,406.76

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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.