Home / 212,819.68-319,229.52-72,579.52

Finding the Fourth Proportional to 212,819.68, 319,229.52 and 72,579.52

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Solution

The fourth proportional to 212,819.68, 319,229.52 and 72,579.52 is: 108,869.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,819.68 : 319,229.52 = 72,579.52 : x
  2. Step 2: Convert to fraction form
    212,819.68/319,229.52 = 72,579.52/x
  3. Step 3: Cross multiply
    212,819.68x = 319,229.52 × 72,579.52
  4. Step 4: Simplify right side
    212,819.68x = 23,169,525,331.43
  5. Step 5: Solve for x
    x = 23,169,525,331.43/212,819.68
  6. Step 6: Final answer
    x = 108,869.28

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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.