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Finding the Fourth Proportional to 259,326.49, 388,896.21 and 109,578.38

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Solution

The fourth proportional to 259,326.49, 388,896.21 and 109,578.38 is: 164,328.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,326.49 : 388,896.21 = 109,578.38 : x
  2. Step 2: Convert to fraction form
    259,326.49/388,896.21 = 109,578.38/x
  3. Step 3: Cross multiply
    259,326.49x = 388,896.21 × 109,578.38
  4. Step 4: Simplify right side
    259,326.49x = 42,614,617,778.07
  5. Step 5: Solve for x
    x = 42,614,617,778.07/259,326.49
  6. Step 6: Final answer
    x = 164,328.06

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1.5x scale

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.