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Finding the Fourth Proportional to 228,871.73, 315,843.08 and 126,898.40

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Solution

The fourth proportional to 228,871.73, 315,843.08 and 126,898.40 is: 175,119.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,871.73 : 315,843.08 = 126,898.40 : x
  2. Step 2: Convert to fraction form
    228,871.73/315,843.08 = 126,898.40/x
  3. Step 3: Cross multiply
    228,871.73x = 315,843.08 × 126,898.40
  4. Step 4: Simplify right side
    228,871.73x = 40,079,981,658.19
  5. Step 5: Solve for x
    x = 40,079,981,658.19/228,871.73
  6. Step 6: Final answer
    x = 175,119.84

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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.