Home / 431,353.18-647,029.78-131,834.62

Finding the Fourth Proportional to 431,353.18, 647,029.78 and 131,834.62

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Solution

The fourth proportional to 431,353.18, 647,029.78 and 131,834.62 is: 197,751.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,353.18 : 647,029.78 = 131,834.62 : x
  2. Step 2: Convert to fraction form
    431,353.18/647,029.78 = 131,834.62/x
  3. Step 3: Cross multiply
    431,353.18x = 647,029.78 × 131,834.62
  4. Step 4: Simplify right side
    431,353.18x = 85,300,925,174.98
  5. Step 5: Solve for x
    x = 85,300,925,174.98/431,353.18
  6. Step 6: Final answer
    x = 197,751.93

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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.