Home / 326,945.28-490,408.20-90,302.16

Finding the Fourth Proportional to 326,945.28, 490,408.20 and 90,302.16

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Solution

The fourth proportional to 326,945.28, 490,408.20 and 90,302.16 is: 135,450.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,945.28 : 490,408.20 = 90,302.16 : x
  2. Step 2: Convert to fraction form
    326,945.28/490,408.20 = 90,302.16/x
  3. Step 3: Cross multiply
    326,945.28x = 490,408.20 × 90,302.16
  4. Step 4: Simplify right side
    326,945.28x = 44,284,919,741.71
  5. Step 5: Solve for x
    x = 44,284,919,741.71/326,945.28
  6. Step 6: Final answer
    x = 135,450.56

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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.