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Finding the Fourth Proportional to 279,676.26, 385,965 and 152,358.84

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Solution

The fourth proportional to 279,676.26, 385,965 and 152,358.84 is: 210,261.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,676.26 : 385,965 = 152,358.84 : x
  2. Step 2: Convert to fraction form
    279,676.26/385,965 = 152,358.84/x
  3. Step 3: Cross multiply
    279,676.26x = 385,965 × 152,358.84
  4. Step 4: Simplify right side
    279,676.26x = 58,805,179,680.60
  5. Step 5: Solve for x
    x = 58,805,179,680.60/279,676.26
  6. Step 6: Final answer
    x = 210,261.61

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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.