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Finding the Fourth Proportional to 228,958.65, 315,982.35 and 127,016.98

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Solution

The fourth proportional to 228,958.65, 315,982.35 and 127,016.98 is: 175,294.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,958.65 : 315,982.35 = 127,016.98 : x
  2. Step 2: Convert to fraction form
    228,958.65/315,982.35 = 127,016.98/x
  3. Step 3: Cross multiply
    228,958.65x = 315,982.35 × 127,016.98
  4. Step 4: Simplify right side
    228,958.65x = 40,135,123,040.35
  5. Step 5: Solve for x
    x = 40,135,123,040.35/228,958.65
  6. Step 6: Final answer
    x = 175,294.20

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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.