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Finding the Fourth Proportional to 225,571.88, 338,331.47 and 90,630.51

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Solution

The fourth proportional to 225,571.88, 338,331.47 and 90,630.51 is: 135,935.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,571.88 : 338,331.47 = 90,630.51 : x
  2. Step 2: Convert to fraction form
    225,571.88/338,331.47 = 90,630.51/x
  3. Step 3: Cross multiply
    225,571.88x = 338,331.47 × 90,630.51
  4. Step 4: Simplify right side
    225,571.88x = 30,663,153,675.15
  5. Step 5: Solve for x
    x = 30,663,153,675.15/225,571.88
  6. Step 6: Final answer
    x = 135,935.18

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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.