Home / 260,352.72-390,083.20-142,107.04

Finding the Fourth Proportional to 260,352.72, 390,083.20 and 142,107.04

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Solution

The fourth proportional to 260,352.72, 390,083.20 and 142,107.04 is: 212,917.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,352.72 : 390,083.20 = 142,107.04 : x
  2. Step 2: Convert to fraction form
    260,352.72/390,083.20 = 142,107.04/x
  3. Step 3: Cross multiply
    260,352.72x = 390,083.20 × 142,107.04
  4. Step 4: Simplify right side
    260,352.72x = 55,433,568,905.73
  5. Step 5: Solve for x
    x = 55,433,568,905.73/260,352.72
  6. Step 6: Final answer
    x = 212,917.19

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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.