Home / 399,037.38-597,602.61-221,103.06

Finding the Fourth Proportional to 399,037.38, 597,602.61 and 221,103.06

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Solution

The fourth proportional to 399,037.38, 597,602.61 and 221,103.06 is: 331,126.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,037.38 : 597,602.61 = 221,103.06 : x
  2. Step 2: Convert to fraction form
    399,037.38/597,602.61 = 221,103.06/x
  3. Step 3: Cross multiply
    399,037.38x = 597,602.61 × 221,103.06
  4. Step 4: Simplify right side
    399,037.38x = 132,131,765,734.99
  5. Step 5: Solve for x
    x = 132,131,765,734.99/399,037.38
  6. Step 6: Final answer
    x = 331,126.29

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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.