Home / 205,687.20-308,509.92-139,552.32

Finding the Fourth Proportional to 205,687.20, 308,509.92 and 139,552.32

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Solution

The fourth proportional to 205,687.20, 308,509.92 and 139,552.32 is: 209,314.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,687.20 : 308,509.92 = 139,552.32 : x
  2. Step 2: Convert to fraction form
    205,687.20/308,509.92 = 139,552.32/x
  3. Step 3: Cross multiply
    205,687.20x = 308,509.92 × 139,552.32
  4. Step 4: Simplify right side
    205,687.20x = 43,053,275,079.01
  5. Step 5: Solve for x
    x = 43,053,275,079.01/205,687.20
  6. Step 6: Final answer
    x = 209,314.31

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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.