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Finding the Fourth Proportional to 225,518, 311,225.10 and 124,916

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Solution

The fourth proportional to 225,518, 311,225.10 and 124,916 is: 172,389.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,518 : 311,225.10 = 124,916 : x
  2. Step 2: Convert to fraction form
    225,518/311,225.10 = 124,916/x
  3. Step 3: Cross multiply
    225,518x = 311,225.10 × 124,916
  4. Step 4: Simplify right side
    225,518x = 38,876,994,591.60
  5. Step 5: Solve for x
    x = 38,876,994,591.60/225,518
  6. Step 6: Final answer
    x = 172,389.76

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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.