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Finding the Fourth Proportional to 230,297.99, 317,834.60 and 128,340.05

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Solution

The fourth proportional to 230,297.99, 317,834.60 and 128,340.05 is: 177,122.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,297.99 : 317,834.60 = 128,340.05 : x
  2. Step 2: Convert to fraction form
    230,297.99/317,834.60 = 128,340.05/x
  3. Step 3: Cross multiply
    230,297.99x = 317,834.60 × 128,340.05
  4. Step 4: Simplify right side
    230,297.99x = 40,790,906,224.86
  5. Step 5: Solve for x
    x = 40,790,906,224.86/230,297.99
  6. Step 6: Final answer
    x = 177,122.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.