Home / 253,246.20-379,869.30-66,257.70

Finding the Fourth Proportional to 253,246.20, 379,869.30 and 66,257.70

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Solution

The fourth proportional to 253,246.20, 379,869.30 and 66,257.70 is: 99,386.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,246.20 : 379,869.30 = 66,257.70 : x
  2. Step 2: Convert to fraction form
    253,246.20/379,869.30 = 66,257.70/x
  3. Step 3: Cross multiply
    253,246.20x = 379,869.30 × 66,257.70
  4. Step 4: Simplify right side
    253,246.20x = 25,169,266,118.61
  5. Step 5: Solve for x
    x = 25,169,266,118.61/253,246.20
  6. Step 6: Final answer
    x = 99,386.55

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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.