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Finding the Fourth Proportional to 344,279.66, 516,378.41 and 91,578.65

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Solution

The fourth proportional to 344,279.66, 516,378.41 and 91,578.65 is: 137,357.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,279.66 : 516,378.41 = 91,578.65 : x
  2. Step 2: Convert to fraction form
    344,279.66/516,378.41 = 91,578.65/x
  3. Step 3: Cross multiply
    344,279.66x = 516,378.41 × 91,578.65
  4. Step 4: Simplify right side
    344,279.66x = 47,289,234,980.58
  5. Step 5: Solve for x
    x = 47,289,234,980.58/344,279.66
  6. Step 6: Final answer
    x = 137,357.04

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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.