Home / 217,721.97-326,603.61-84,612.51

Finding the Fourth Proportional to 217,721.97, 326,603.61 and 84,612.51

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Solution

The fourth proportional to 217,721.97, 326,603.61 and 84,612.51 is: 126,926.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,721.97 : 326,603.61 = 84,612.51 : x
  2. Step 2: Convert to fraction form
    217,721.97/326,603.61 = 84,612.51/x
  3. Step 3: Cross multiply
    217,721.97x = 326,603.61 × 84,612.51
  4. Step 4: Simplify right side
    217,721.97x = 27,634,751,217.16
  5. Step 5: Solve for x
    x = 27,634,751,217.16/217,721.97
  6. Step 6: Final answer
    x = 126,926.79

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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.