Home / 279,138.52-385,311.36-165,961

Finding the Fourth Proportional to 279,138.52, 385,311.36 and 165,961

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Solution

The fourth proportional to 279,138.52, 385,311.36 and 165,961 is: 229,085.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,138.52 : 385,311.36 = 165,961 : x
  2. Step 2: Convert to fraction form
    279,138.52/385,311.36 = 165,961/x
  3. Step 3: Cross multiply
    279,138.52x = 385,311.36 × 165,961
  4. Step 4: Simplify right side
    279,138.52x = 63,946,658,616.96
  5. Step 5: Solve for x
    x = 63,946,658,616.96/279,138.52
  6. Step 6: Final answer
    x = 229,085.76

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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.