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Finding the Fourth Proportional to 356,604.78, 492,165 and 220,682.51

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Solution

The fourth proportional to 356,604.78, 492,165 and 220,682.51 is: 304,573.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,604.78 : 492,165 = 220,682.51 : x
  2. Step 2: Convert to fraction form
    356,604.78/492,165 = 220,682.51/x
  3. Step 3: Cross multiply
    356,604.78x = 492,165 × 220,682.51
  4. Step 4: Simplify right side
    356,604.78x = 108,612,205,073.33
  5. Step 5: Solve for x
    x = 108,612,205,073.33/356,604.78
  6. Step 6: Final answer
    x = 304,573.05

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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.