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Finding the Fourth Proportional to 260,890.70, 391,511.40 and 92,410.42

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Solution

The fourth proportional to 260,890.70, 391,511.40 and 92,410.42 is: 138,677.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,890.70 : 391,511.40 = 92,410.42 : x
  2. Step 2: Convert to fraction form
    260,890.70/391,511.40 = 92,410.42/x
  3. Step 3: Cross multiply
    260,890.70x = 391,511.40 × 92,410.42
  4. Step 4: Simplify right side
    260,890.70x = 36,179,732,908.79
  5. Step 5: Solve for x
    x = 36,179,732,908.79/260,890.70
  6. Step 6: Final answer
    x = 138,677.74

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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.