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Finding the Fourth Proportional to 260,721.30, 391,081.95 and 201,672.30

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Solution

The fourth proportional to 260,721.30, 391,081.95 and 201,672.30 is: 302,508.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,721.30 : 391,081.95 = 201,672.30 : x
  2. Step 2: Convert to fraction form
    260,721.30/391,081.95 = 201,672.30/x
  3. Step 3: Cross multiply
    260,721.30x = 391,081.95 × 201,672.30
  4. Step 4: Simplify right side
    260,721.30x = 78,870,396,344.99
  5. Step 5: Solve for x
    x = 78,870,396,344.99/260,721.30
  6. Step 6: Final answer
    x = 302,508.45

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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.