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Finding the Fourth Proportional to 260,834.10, 391,251.15 and 201,712.20

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Solution

The fourth proportional to 260,834.10, 391,251.15 and 201,712.20 is: 302,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,834.10 : 391,251.15 = 201,712.20 : x
  2. Step 2: Convert to fraction form
    260,834.10/391,251.15 = 201,712.20/x
  3. Step 3: Cross multiply
    260,834.10x = 391,251.15 × 201,712.20
  4. Step 4: Simplify right side
    260,834.10x = 78,920,130,219.03
  5. Step 5: Solve for x
    x = 78,920,130,219.03/260,834.10
  6. Step 6: Final answer
    x = 302,568.30

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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.