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Finding the Fourth Proportional to 225,345.21, 310,976.48 and 123,377.28

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Solution

The fourth proportional to 225,345.21, 310,976.48 and 123,377.28 is: 170,260.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,345.21 : 310,976.48 = 123,377.28 : x
  2. Step 2: Convert to fraction form
    225,345.21/310,976.48 = 123,377.28/x
  3. Step 3: Cross multiply
    225,345.21x = 310,976.48 × 123,377.28
  4. Step 4: Simplify right side
    225,345.21x = 38,367,431,388.66
  5. Step 5: Solve for x
    x = 38,367,431,388.66/225,345.21
  6. Step 6: Final answer
    x = 170,260.69

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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.