Home / 215,819.40-323,729.10-120,952.20

Finding the Fourth Proportional to 215,819.40, 323,729.10 and 120,952.20

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Solution

The fourth proportional to 215,819.40, 323,729.10 and 120,952.20 is: 181,428.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,819.40 : 323,729.10 = 120,952.20 : x
  2. Step 2: Convert to fraction form
    215,819.40/323,729.10 = 120,952.20/x
  3. Step 3: Cross multiply
    215,819.40x = 323,729.10 × 120,952.20
  4. Step 4: Simplify right side
    215,819.40x = 39,155,746,849.02
  5. Step 5: Solve for x
    x = 39,155,746,849.02/215,819.40
  6. Step 6: Final answer
    x = 181,428.30

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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.