Home / 221,831.36-306,275.09-131,216.43

Finding the Fourth Proportional to 221,831.36, 306,275.09 and 131,216.43

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Solution

The fourth proportional to 221,831.36, 306,275.09 and 131,216.43 is: 181,166.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,831.36 : 306,275.09 = 131,216.43 : x
  2. Step 2: Convert to fraction form
    221,831.36/306,275.09 = 131,216.43/x
  3. Step 3: Cross multiply
    221,831.36x = 306,275.09 × 131,216.43
  4. Step 4: Simplify right side
    221,831.36x = 40,188,323,251.65
  5. Step 5: Solve for x
    x = 40,188,323,251.65/221,831.36
  6. Step 6: Final answer
    x = 181,166.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.