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Finding the Fourth Proportional to 279,137.16, 385,201.98 and 162,872.87

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Solution

The fourth proportional to 279,137.16, 385,201.98 and 162,872.87 is: 224,760.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,137.16 : 385,201.98 = 162,872.87 : x
  2. Step 2: Convert to fraction form
    279,137.16/385,201.98 = 162,872.87/x
  3. Step 3: Cross multiply
    279,137.16x = 385,201.98 × 162,872.87
  4. Step 4: Simplify right side
    279,137.16x = 62,738,950,086.27
  5. Step 5: Solve for x
    x = 62,738,950,086.27/279,137.16
  6. Step 6: Final answer
    x = 224,760.29

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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.