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Finding the Fourth Proportional to 290,873.14, 436,319.25 and 80,493.46

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Solution

The fourth proportional to 290,873.14, 436,319.25 and 80,493.46 is: 120,742.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,873.14 : 436,319.25 = 80,493.46 : x
  2. Step 2: Convert to fraction form
    290,873.14/436,319.25 = 80,493.46/x
  3. Step 3: Cross multiply
    290,873.14x = 436,319.25 × 80,493.46
  4. Step 4: Simplify right side
    290,873.14x = 35,120,846,097.11
  5. Step 5: Solve for x
    x = 35,120,846,097.11/290,873.14
  6. Step 6: Final answer
    x = 120,742.83

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1.5x scale

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.