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Finding the Fourth Proportional to 229,013.44, 315,878.64 and 221,306.56

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Solution

The fourth proportional to 229,013.44, 315,878.64 and 221,306.56 is: 305,248.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,013.44 : 315,878.64 = 221,306.56 : x
  2. Step 2: Convert to fraction form
    229,013.44/315,878.64 = 221,306.56/x
  3. Step 3: Cross multiply
    229,013.44x = 315,878.64 × 221,306.56
  4. Step 4: Simplify right side
    229,013.44x = 69,906,015,195.88
  5. Step 5: Solve for x
    x = 69,906,015,195.88/229,013.44
  6. Step 6: Final answer
    x = 305,248.53

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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.