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Finding the Fourth Proportional to 225,579, 311,309.22 and 124,977

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Solution

The fourth proportional to 225,579, 311,309.22 and 124,977 is: 172,473.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,579 : 311,309.22 = 124,977 : x
  2. Step 2: Convert to fraction form
    225,579/311,309.22 = 124,977/x
  3. Step 3: Cross multiply
    225,579x = 311,309.22 × 124,977
  4. Step 4: Simplify right side
    225,579x = 38,906,492,387.94
  5. Step 5: Solve for x
    x = 38,906,492,387.94/225,579
  6. Step 6: Final answer
    x = 172,473.91

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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.