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Finding the Fourth Proportional to 327,190.80, 490,421.70 and 127,444.80

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Solution

The fourth proportional to 327,190.80, 490,421.70 and 127,444.80 is: 191,025.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,190.80 : 490,421.70 = 127,444.80 : x
  2. Step 2: Convert to fraction form
    327,190.80/490,421.70 = 127,444.80/x
  3. Step 3: Cross multiply
    327,190.80x = 490,421.70 × 127,444.80
  4. Step 4: Simplify right side
    327,190.80x = 62,501,695,472.16
  5. Step 5: Solve for x
    x = 62,501,695,472.16/327,190.80
  6. Step 6: Final answer
    x = 191,025.22

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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.