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Finding the Fourth Proportional to 356,634.33, 492,205.73 and 220,712.05

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Solution

The fourth proportional to 356,634.33, 492,205.73 and 220,712.05 is: 304,613.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,634.33 : 492,205.73 = 220,712.05 : x
  2. Step 2: Convert to fraction form
    356,634.33/492,205.73 = 220,712.05/x
  3. Step 3: Cross multiply
    356,634.33x = 492,205.73 × 220,712.05
  4. Step 4: Simplify right side
    356,634.33x = 108,635,734,586.49
  5. Step 5: Solve for x
    x = 108,635,734,586.49/356,634.33
  6. Step 6: Final answer
    x = 304,613.79

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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.