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Finding the Fourth Proportional to 230,287.56, 317,820.08 and 128,329.60

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Solution

The fourth proportional to 230,287.56, 317,820.08 and 128,329.60 is: 177,107.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,287.56 : 317,820.08 = 128,329.60 : x
  2. Step 2: Convert to fraction form
    230,287.56/317,820.08 = 128,329.60/x
  3. Step 3: Cross multiply
    230,287.56x = 317,820.08 × 128,329.60
  4. Step 4: Simplify right side
    230,287.56x = 40,785,723,738.37
  5. Step 5: Solve for x
    x = 40,785,723,738.37/230,287.56
  6. Step 6: Final answer
    x = 177,107.80

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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.