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Finding the Fourth Proportional to 327,064.80, 490,232.70 and 127,318.80

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Solution

The fourth proportional to 327,064.80, 490,232.70 and 127,318.80 is: 190,836.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,064.80 : 490,232.70 = 127,318.80 : x
  2. Step 2: Convert to fraction form
    327,064.80/490,232.70 = 127,318.80/x
  3. Step 3: Cross multiply
    327,064.80x = 490,232.70 × 127,318.80
  4. Step 4: Simplify right side
    327,064.80x = 62,415,839,084.76
  5. Step 5: Solve for x
    x = 62,415,839,084.76/327,064.80
  6. Step 6: Final answer
    x = 190,836.31

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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.