Home / 261,378.06-391,909.23-117,257.49

Finding the Fourth Proportional to 261,378.06, 391,909.23 and 117,257.49

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Solution

The fourth proportional to 261,378.06, 391,909.23 and 117,257.49 is: 175,815.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,378.06 : 391,909.23 = 117,257.49 : x
  2. Step 2: Convert to fraction form
    261,378.06/391,909.23 = 117,257.49/x
  3. Step 3: Cross multiply
    261,378.06x = 391,909.23 × 117,257.49
  4. Step 4: Simplify right side
    261,378.06x = 45,954,290,658.09
  5. Step 5: Solve for x
    x = 45,954,290,658.09/261,378.06
  6. Step 6: Final answer
    x = 175,815.41

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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.