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Finding the Fourth Proportional to 260,889.70, 391,509.90 and 92,409.42

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Solution

The fourth proportional to 260,889.70, 391,509.90 and 92,409.42 is: 138,676.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,889.70 : 391,509.90 = 92,409.42 : x
  2. Step 2: Convert to fraction form
    260,889.70/391,509.90 = 92,409.42/x
  3. Step 3: Cross multiply
    260,889.70x = 391,509.90 × 92,409.42
  4. Step 4: Simplify right side
    260,889.70x = 36,179,202,783.26
  5. Step 5: Solve for x
    x = 36,179,202,783.26/260,889.70
  6. Step 6: Final answer
    x = 138,676.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.