Home / 213,480.78-319,943.33-86,972.86

Finding the Fourth Proportional to 213,480.78, 319,943.33 and 86,972.86

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Solution

The fourth proportional to 213,480.78, 319,943.33 and 86,972.86 is: 130,346.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,480.78 : 319,943.33 = 86,972.86 : x
  2. Step 2: Convert to fraction form
    213,480.78/319,943.33 = 86,972.86/x
  3. Step 3: Cross multiply
    213,480.78x = 319,943.33 × 86,972.86
  4. Step 4: Simplify right side
    213,480.78x = 27,826,385,428.78
  5. Step 5: Solve for x
    x = 27,826,385,428.78/213,480.78
  6. Step 6: Final answer
    x = 130,346.09

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1.5x scale

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.