Home / 278,821.40-418,232.10-200,672.60

Finding the Fourth Proportional to 278,821.40, 418,232.10 and 200,672.60

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Solution

The fourth proportional to 278,821.40, 418,232.10 and 200,672.60 is: 301,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,821.40 : 418,232.10 = 200,672.60 : x
  2. Step 2: Convert to fraction form
    278,821.40/418,232.10 = 200,672.60/x
  3. Step 3: Cross multiply
    278,821.40x = 418,232.10 × 200,672.60
  4. Step 4: Simplify right side
    278,821.40x = 83,927,722,910.46
  5. Step 5: Solve for x
    x = 83,927,722,910.46/278,821.40
  6. Step 6: Final answer
    x = 301,008.90

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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.