Home / 326,904.72-490,385.30-90,247.43

Finding the Fourth Proportional to 326,904.72, 490,385.30 and 90,247.43

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Solution

The fourth proportional to 326,904.72, 490,385.30 and 90,247.43 is: 135,378.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,904.72 : 490,385.30 = 90,247.43 : x
  2. Step 2: Convert to fraction form
    326,904.72/490,385.30 = 90,247.43/x
  3. Step 3: Cross multiply
    326,904.72x = 490,385.30 × 90,247.43
  4. Step 4: Simplify right side
    326,904.72x = 44,256,010,131.62
  5. Step 5: Solve for x
    x = 44,256,010,131.62/326,904.72
  6. Step 6: Final answer
    x = 135,378.93

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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.