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Finding the Fourth Proportional to 423,660.78, 635,578.65 and 124,151.13

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Solution

The fourth proportional to 423,660.78, 635,578.65 and 124,151.13 is: 186,252.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,660.78 : 635,578.65 = 124,151.13 : x
  2. Step 2: Convert to fraction form
    423,660.78/635,578.65 = 124,151.13/x
  3. Step 3: Cross multiply
    423,660.78x = 635,578.65 × 124,151.13
  4. Step 4: Simplify right side
    423,660.78x = 78,907,807,601.37
  5. Step 5: Solve for x
    x = 78,907,807,601.37/423,660.78
  6. Step 6: Final answer
    x = 186,252.33

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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.