Home / 257,204.23-385,665.40-79,661.95

Finding the Fourth Proportional to 257,204.23, 385,665.40 and 79,661.95

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Solution

The fourth proportional to 257,204.23, 385,665.40 and 79,661.95 is: 119,449.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,204.23 : 385,665.40 = 79,661.95 : x
  2. Step 2: Convert to fraction form
    257,204.23/385,665.40 = 79,661.95/x
  3. Step 3: Cross multiply
    257,204.23x = 385,665.40 × 79,661.95
  4. Step 4: Simplify right side
    257,204.23x = 30,722,857,811.53
  5. Step 5: Solve for x
    x = 30,722,857,811.53/257,204.23
  6. Step 6: Final answer
    x = 119,449.27

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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.