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Finding the Fourth Proportional to 225,707.89, 311,480.43 and 135,067.68

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Solution

The fourth proportional to 225,707.89, 311,480.43 and 135,067.68 is: 186,395.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,707.89 : 311,480.43 = 135,067.68 : x
  2. Step 2: Convert to fraction form
    225,707.89/311,480.43 = 135,067.68/x
  3. Step 3: Cross multiply
    225,707.89x = 311,480.43 × 135,067.68
  4. Step 4: Simplify right side
    225,707.89x = 42,070,939,045.50
  5. Step 5: Solve for x
    x = 42,070,939,045.50/225,707.89
  6. Step 6: Final answer
    x = 186,395.52

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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.