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Finding the Fourth Proportional to 327,201.80, 490,438.20 and 127,455.80

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Solution

The fourth proportional to 327,201.80, 490,438.20 and 127,455.80 is: 191,041.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,201.80 : 490,438.20 = 127,455.80 : x
  2. Step 2: Convert to fraction form
    327,201.80/490,438.20 = 127,455.80/x
  3. Step 3: Cross multiply
    327,201.80x = 490,438.20 × 127,455.80
  4. Step 4: Simplify right side
    327,201.80x = 62,509,193,131.56
  5. Step 5: Solve for x
    x = 62,509,193,131.56/327,201.80
  6. Step 6: Final answer
    x = 191,041.72

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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.