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Finding the Fourth Proportional to 221,698.41, 305,910.22 and 124,888.42

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Solution

The fourth proportional to 221,698.41, 305,910.22 and 124,888.42 is: 172,327.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,698.41 : 305,910.22 = 124,888.42 : x
  2. Step 2: Convert to fraction form
    221,698.41/305,910.22 = 124,888.42/x
  3. Step 3: Cross multiply
    221,698.41x = 305,910.22 × 124,888.42
  4. Step 4: Simplify right side
    221,698.41x = 38,204,644,037.65
  5. Step 5: Solve for x
    x = 38,204,644,037.65/221,698.41
  6. Step 6: Final answer
    x = 172,327.10

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1.5x scale

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.