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Finding the Fourth Proportional to 321,339.57, 481,534.20 and 303,366.53

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Solution

The fourth proportional to 321,339.57, 481,534.20 and 303,366.53 is: 454,601.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,339.57 : 481,534.20 = 303,366.53 : x
  2. Step 2: Convert to fraction form
    321,339.57/481,534.20 = 303,366.53/x
  3. Step 3: Cross multiply
    321,339.57x = 481,534.20 × 303,366.53
  4. Step 4: Simplify right side
    321,339.57x = 146,081,356,922.66
  5. Step 5: Solve for x
    x = 146,081,356,922.66/321,339.57
  6. Step 6: Final answer
    x = 454,601.21

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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.