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Finding the Fourth Proportional to 481,288.30, 663,969.36 and 290,195.53

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Solution

The fourth proportional to 481,288.30, 663,969.36 and 290,195.53 is: 400,344.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,288.30 : 663,969.36 = 290,195.53 : x
  2. Step 2: Convert to fraction form
    481,288.30/663,969.36 = 290,195.53/x
  3. Step 3: Cross multiply
    481,288.30x = 663,969.36 × 290,195.53
  4. Step 4: Simplify right side
    481,288.30x = 192,680,940,328.96
  5. Step 5: Solve for x
    x = 192,680,940,328.96/481,288.30
  6. Step 6: Final answer
    x = 400,344.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.