Home / 389,542.31-585,340.93-209,760.66

Finding the Fourth Proportional to 389,542.31, 585,340.93 and 209,760.66

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Solution

The fourth proportional to 389,542.31, 585,340.93 and 209,760.66 is: 315,194.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,542.31 : 585,340.93 = 209,760.66 : x
  2. Step 2: Convert to fraction form
    389,542.31/585,340.93 = 209,760.66/x
  3. Step 3: Cross multiply
    389,542.31x = 585,340.93 × 209,760.66
  4. Step 4: Simplify right side
    389,542.31x = 122,781,498,753.01
  5. Step 5: Solve for x
    x = 122,781,498,753.01/389,542.31
  6. Step 6: Final answer
    x = 315,194.26

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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.