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Finding the Fourth Proportional to 481,491.91, 722,378.49 and 215,190.15

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Solution

The fourth proportional to 481,491.91, 722,378.49 and 215,190.15 is: 322,848.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,491.91 : 722,378.49 = 215,190.15 : x
  2. Step 2: Convert to fraction form
    481,491.91/722,378.49 = 215,190.15/x
  3. Step 3: Cross multiply
    481,491.91x = 722,378.49 × 215,190.15
  4. Step 4: Simplify right side
    481,491.91x = 155,448,736,167.37
  5. Step 5: Solve for x
    x = 155,448,736,167.37/481,491.91
  6. Step 6: Final answer
    x = 322,848.07

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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.