Home / 217,911.13-326,883.71-84,781.15

Finding the Fourth Proportional to 217,911.13, 326,883.71 and 84,781.15

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Solution

The fourth proportional to 217,911.13, 326,883.71 and 84,781.15 is: 127,178.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,911.13 : 326,883.71 = 84,781.15 : x
  2. Step 2: Convert to fraction form
    217,911.13/326,883.71 = 84,781.15/x
  3. Step 3: Cross multiply
    217,911.13x = 326,883.71 × 84,781.15
  4. Step 4: Simplify right side
    217,911.13x = 27,713,576,850.07
  5. Step 5: Solve for x
    x = 27,713,576,850.07/217,911.13
  6. Step 6: Final answer
    x = 127,178.34

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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.