Home / 257,278.08-385,882.09-67,722.57

Finding the Fourth Proportional to 257,278.08, 385,882.09 and 67,722.57

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Solution

The fourth proportional to 257,278.08, 385,882.09 and 67,722.57 is: 101,574.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,278.08 : 385,882.09 = 67,722.57 : x
  2. Step 2: Convert to fraction form
    257,278.08/385,882.09 = 67,722.57/x
  3. Step 3: Cross multiply
    257,278.08x = 385,882.09 × 67,722.57
  4. Step 4: Simplify right side
    257,278.08x = 26,132,926,851.77
  5. Step 5: Solve for x
    x = 26,132,926,851.77/257,278.08
  6. Step 6: Final answer
    x = 101,574.63

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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.