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Finding the Fourth Proportional to 257,275.07, 385,949.97 and 79,796.38

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Solution

The fourth proportional to 257,275.07, 385,949.97 and 79,796.38 is: 119,706.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,275.07 : 385,949.97 = 79,796.38 : x
  2. Step 2: Convert to fraction form
    257,275.07/385,949.97 = 79,796.38/x
  3. Step 3: Cross multiply
    257,275.07x = 385,949.97 × 79,796.38
  4. Step 4: Simplify right side
    257,275.07x = 30,797,410,467.11
  5. Step 5: Solve for x
    x = 30,797,410,467.11/257,275.07
  6. Step 6: Final answer
    x = 119,706.16

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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.