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Finding the Fourth Proportional to 326,887.59, 490,359.53 and 90,230.28

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Solution

The fourth proportional to 326,887.59, 490,359.53 and 90,230.28 is: 135,353.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,887.59 : 490,359.53 = 90,230.28 : x
  2. Step 2: Convert to fraction form
    326,887.59/490,359.53 = 90,230.28/x
  3. Step 3: Cross multiply
    326,887.59x = 490,359.53 × 90,230.28
  4. Step 4: Simplify right side
    326,887.59x = 44,245,277,692.57
  5. Step 5: Solve for x
    x = 44,245,277,692.57/326,887.59
  6. Step 6: Final answer
    x = 135,353.19

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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.