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Finding the Fourth Proportional to 356,393.36, 491,636.22 and 220,383.92

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Solution

The fourth proportional to 356,393.36, 491,636.22 and 220,383.92 is: 304,014.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,393.36 : 491,636.22 = 220,383.92 : x
  2. Step 2: Convert to fraction form
    356,393.36/491,636.22 = 220,383.92/x
  3. Step 3: Cross multiply
    356,393.36x = 491,636.22 × 220,383.92
  4. Step 4: Simplify right side
    356,393.36x = 108,348,717,377.58
  5. Step 5: Solve for x
    x = 108,348,717,377.58/356,393.36
  6. Step 6: Final answer
    x = 304,014.41

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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.