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Finding the Fourth Proportional to 225,757, 311,554.38 and 125,155

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Solution

The fourth proportional to 225,757, 311,554.38 and 125,155 is: 172,719.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,757 : 311,554.38 = 125,155 : x
  2. Step 2: Convert to fraction form
    225,757/311,554.38 = 125,155/x
  3. Step 3: Cross multiply
    225,757x = 311,554.38 × 125,155
  4. Step 4: Simplify right side
    225,757x = 38,992,588,428.90
  5. Step 5: Solve for x
    x = 38,992,588,428.90/225,757
  6. Step 6: Final answer
    x = 172,719.29

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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.