Home / 326,949.28-490,430.09-90,298.26

Finding the Fourth Proportional to 326,949.28, 490,430.09 and 90,298.26

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Solution

The fourth proportional to 326,949.28, 490,430.09 and 90,298.26 is: 135,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,949.28 : 490,430.09 = 90,298.26 : x
  2. Step 2: Convert to fraction form
    326,949.28/490,430.09 = 90,298.26/x
  3. Step 3: Cross multiply
    326,949.28x = 490,430.09 × 90,298.26
  4. Step 4: Simplify right side
    326,949.28x = 44,284,984,004.39
  5. Step 5: Solve for x
    x = 44,284,984,004.39/326,949.28
  6. Step 6: Final answer
    x = 135,449.10

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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.