Home / 210,831.14-290,949.26-115,335.78

Finding the Fourth Proportional to 210,831.14, 290,949.26 and 115,335.78

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Solution

The fourth proportional to 210,831.14, 290,949.26 and 115,335.78 is: 159,164.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,831.14 : 290,949.26 = 115,335.78 : x
  2. Step 2: Convert to fraction form
    210,831.14/290,949.26 = 115,335.78/x
  3. Step 3: Cross multiply
    210,831.14x = 290,949.26 × 115,335.78
  4. Step 4: Simplify right side
    210,831.14x = 33,556,859,842.52
  5. Step 5: Solve for x
    x = 33,556,859,842.52/210,831.14
  6. Step 6: Final answer
    x = 159,164.63

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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.