Home / 311,029.20-428,999.18-207,611.24

Finding the Fourth Proportional to 311,029.20, 428,999.18 and 207,611.24

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Solution

The fourth proportional to 311,029.20, 428,999.18 and 207,611.24 is: 286,355.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,029.20 : 428,999.18 = 207,611.24 : x
  2. Step 2: Convert to fraction form
    311,029.20/428,999.18 = 207,611.24/x
  3. Step 3: Cross multiply
    311,029.20x = 428,999.18 × 207,611.24
  4. Step 4: Simplify right side
    311,029.20x = 89,065,048,535.73
  5. Step 5: Solve for x
    x = 89,065,048,535.73/311,029.20
  6. Step 6: Final answer
    x = 286,355.91

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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.