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Finding the Fourth Proportional to 382,560.88, 527,998.08 and 221,388.16

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Solution

The fourth proportional to 382,560.88, 527,998.08 and 221,388.16 is: 305,552.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,560.88 : 527,998.08 = 221,388.16 : x
  2. Step 2: Convert to fraction form
    382,560.88/527,998.08 = 221,388.16/x
  3. Step 3: Cross multiply
    382,560.88x = 527,998.08 × 221,388.16
  4. Step 4: Simplify right side
    382,560.88x = 116,892,523,414.73
  5. Step 5: Solve for x
    x = 116,892,523,414.73/382,560.88
  6. Step 6: Final answer
    x = 305,552.74

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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.