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Finding the Fourth Proportional to 483,721.18, 667,262.80 and 290,077.32

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Solution

The fourth proportional to 483,721.18, 667,262.80 and 290,077.32 is: 400,143.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,721.18 : 667,262.80 = 290,077.32 : x
  2. Step 2: Convert to fraction form
    483,721.18/667,262.80 = 290,077.32/x
  3. Step 3: Cross multiply
    483,721.18x = 667,262.80 × 290,077.32
  4. Step 4: Simplify right side
    483,721.18x = 193,557,804,759.70
  5. Step 5: Solve for x
    x = 193,557,804,759.70/483,721.18
  6. Step 6: Final answer
    x = 400,143.33

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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.