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Finding the Fourth Proportional to 228,991.35, 315,996.87 and 127,007.79

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Solution

The fourth proportional to 228,991.35, 315,996.87 and 127,007.79 is: 175,264.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,991.35 : 315,996.87 = 127,007.79 : x
  2. Step 2: Convert to fraction form
    228,991.35/315,996.87 = 127,007.79/x
  3. Step 3: Cross multiply
    228,991.35x = 315,996.87 × 127,007.79
  4. Step 4: Simplify right side
    228,991.35x = 40,134,064,105.62
  5. Step 5: Solve for x
    x = 40,134,064,105.62/228,991.35
  6. Step 6: Final answer
    x = 175,264.54

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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.