Home / 257,215.20-385,166.70-204,727.20

Finding the Fourth Proportional to 257,215.20, 385,166.70 and 204,727.20

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Solution

The fourth proportional to 257,215.20, 385,166.70 and 204,727.20 is: 306,568.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,215.20 : 385,166.70 = 204,727.20 : x
  2. Step 2: Convert to fraction form
    257,215.20/385,166.70 = 204,727.20/x
  3. Step 3: Cross multiply
    257,215.20x = 385,166.70 × 204,727.20
  4. Step 4: Simplify right side
    257,215.20x = 78,854,100,024.24
  5. Step 5: Solve for x
    x = 78,854,100,024.24/257,215.20
  6. Step 6: Final answer
    x = 306,568.59

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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.