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Finding the Fourth Proportional to 279,600, 385,863.36 and 160,375.68

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Solution

The fourth proportional to 279,600, 385,863.36 and 160,375.68 is: 221,327.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,600 : 385,863.36 = 160,375.68 : x
  2. Step 2: Convert to fraction form
    279,600/385,863.36 = 160,375.68/x
  3. Step 3: Cross multiply
    279,600x = 385,863.36 × 160,375.68
  4. Step 4: Simplify right side
    279,600x = 61,883,098,747.08
  5. Step 5: Solve for x
    x = 61,883,098,747.08/279,600
  6. Step 6: Final answer
    x = 221,327.25

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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.