Home / 213,270.50-319,904.84-86,882.55

Finding the Fourth Proportional to 213,270.50, 319,904.84 and 86,882.55

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Solution

The fourth proportional to 213,270.50, 319,904.84 and 86,882.55 is: 130,323.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,270.50 : 319,904.84 = 86,882.55 : x
  2. Step 2: Convert to fraction form
    213,270.50/319,904.84 = 86,882.55/x
  3. Step 3: Cross multiply
    213,270.50x = 319,904.84 × 86,882.55
  4. Step 4: Simplify right side
    213,270.50x = 27,794,147,822.13
  5. Step 5: Solve for x
    x = 27,794,147,822.13/213,270.50
  6. Step 6: Final answer
    x = 130,323.46

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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.