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Finding the Fourth Proportional to 260,932.60, 391,398.90 and 201,810.70

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Solution

The fourth proportional to 260,932.60, 391,398.90 and 201,810.70 is: 302,716.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,932.60 : 391,398.90 = 201,810.70 : x
  2. Step 2: Convert to fraction form
    260,932.60/391,398.90 = 201,810.70/x
  3. Step 3: Cross multiply
    260,932.60x = 391,398.90 × 201,810.70
  4. Step 4: Simplify right side
    260,932.60x = 78,988,485,988.23
  5. Step 5: Solve for x
    x = 78,988,485,988.23/260,932.60
  6. Step 6: Final answer
    x = 302,716.05

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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.