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Finding the Fourth Proportional to 320,437.80, 479,619.90 and 295,554.60

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Solution

The fourth proportional to 320,437.80, 479,619.90 and 295,554.60 is: 442,375.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,437.80 : 479,619.90 = 295,554.60 : x
  2. Step 2: Convert to fraction form
    320,437.80/479,619.90 = 295,554.60/x
  3. Step 3: Cross multiply
    320,437.80x = 479,619.90 × 295,554.60
  4. Step 4: Simplify right side
    320,437.80x = 141,753,867,696.54
  5. Step 5: Solve for x
    x = 141,753,867,696.54/320,437.80
  6. Step 6: Final answer
    x = 442,375.61

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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.