Home / 257,111.20-385,010.70-204,623.20

Finding the Fourth Proportional to 257,111.20, 385,010.70 and 204,623.20

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Solution

The fourth proportional to 257,111.20, 385,010.70 and 204,623.20 is: 306,412.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,111.20 : 385,010.70 = 204,623.20 : x
  2. Step 2: Convert to fraction form
    257,111.20/385,010.70 = 204,623.20/x
  3. Step 3: Cross multiply
    257,111.20x = 385,010.70 × 204,623.20
  4. Step 4: Simplify right side
    257,111.20x = 78,782,121,468.24
  5. Step 5: Solve for x
    x = 78,782,121,468.24/257,111.20
  6. Step 6: Final answer
    x = 306,412.64

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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.