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Finding the Fourth Proportional to 276,021.88, 380,853.89 and 161,278.34

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Solution

The fourth proportional to 276,021.88, 380,853.89 and 161,278.34 is: 222,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,021.88 : 380,853.89 = 161,278.34 : x
  2. Step 2: Convert to fraction form
    276,021.88/380,853.89 = 161,278.34/x
  3. Step 3: Cross multiply
    276,021.88x = 380,853.89 × 161,278.34
  4. Step 4: Simplify right side
    276,021.88x = 61,423,480,451.08
  5. Step 5: Solve for x
    x = 61,423,480,451.08/276,021.88
  6. Step 6: Final answer
    x = 222,531.20

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1.5x scale

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.