Home / 326,949.78-490,430.85-90,298.76

Finding the Fourth Proportional to 326,949.78, 490,430.85 and 90,298.76

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Solution

The fourth proportional to 326,949.78, 490,430.85 and 90,298.76 is: 135,449.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,949.78 : 490,430.85 = 90,298.76 : x
  2. Step 2: Convert to fraction form
    326,949.78/490,430.85 = 90,298.76/x
  3. Step 3: Cross multiply
    326,949.78x = 490,430.85 × 90,298.76
  4. Step 4: Simplify right side
    326,949.78x = 44,285,297,169.25
  5. Step 5: Solve for x
    x = 44,285,297,169.25/326,949.78
  6. Step 6: Final answer
    x = 135,449.85

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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.