Home / 205,359.30-307,966.05-142,179.30

Finding the Fourth Proportional to 205,359.30, 307,966.05 and 142,179.30

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Solution

The fourth proportional to 205,359.30, 307,966.05 and 142,179.30 is: 213,218.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,359.30 : 307,966.05 = 142,179.30 : x
  2. Step 2: Convert to fraction form
    205,359.30/307,966.05 = 142,179.30/x
  3. Step 3: Cross multiply
    205,359.30x = 307,966.05 × 142,179.30
  4. Step 4: Simplify right side
    205,359.30x = 43,786,397,412.77
  5. Step 5: Solve for x
    x = 43,786,397,412.77/205,359.30
  6. Step 6: Final answer
    x = 213,218.48

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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.