Home / 326,905.22-490,386.04-90,247.92

Finding the Fourth Proportional to 326,905.22, 490,386.04 and 90,247.92

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Solution

The fourth proportional to 326,905.22, 490,386.04 and 90,247.92 is: 135,379.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,905.22 : 490,386.04 = 90,247.92 : x
  2. Step 2: Convert to fraction form
    326,905.22/490,386.04 = 90,247.92/x
  3. Step 3: Cross multiply
    326,905.22x = 490,386.04 × 90,247.92
  4. Step 4: Simplify right side
    326,905.22x = 44,256,320,107.04
  5. Step 5: Solve for x
    x = 44,256,320,107.04/326,905.22
  6. Step 6: Final answer
    x = 135,379.67

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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.