Home / 279,774.12-386,076.20-158,915.04

Finding the Fourth Proportional to 279,774.12, 386,076.20 and 158,915.04

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Solution

The fourth proportional to 279,774.12, 386,076.20 and 158,915.04 is: 219,295.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,774.12 : 386,076.20 = 158,915.04 : x
  2. Step 2: Convert to fraction form
    279,774.12/386,076.20 = 158,915.04/x
  3. Step 3: Cross multiply
    279,774.12x = 386,076.20 × 158,915.04
  4. Step 4: Simplify right side
    279,774.12x = 61,353,313,971.47
  5. Step 5: Solve for x
    x = 61,353,313,971.47/279,774.12
  6. Step 6: Final answer
    x = 219,295.89

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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.