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Finding the Fourth Proportional to 260,684.80, 391,044.96 and 83,205.18

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Solution

The fourth proportional to 260,684.80, 391,044.96 and 83,205.18 is: 124,813.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,684.80 : 391,044.96 = 83,205.18 : x
  2. Step 2: Convert to fraction form
    260,684.80/391,044.96 = 83,205.18/x
  3. Step 3: Cross multiply
    260,684.80x = 391,044.96 × 83,205.18
  4. Step 4: Simplify right side
    260,684.80x = 32,536,966,284.89
  5. Step 5: Solve for x
    x = 32,536,966,284.89/260,684.80
  6. Step 6: Final answer
    x = 124,813.44

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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.