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Finding the Fourth Proportional to 230,536.67, 318,141.99 and 128,568.60

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Solution

The fourth proportional to 230,536.67, 318,141.99 and 128,568.60 is: 177,425.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,536.67 : 318,141.99 = 128,568.60 : x
  2. Step 2: Convert to fraction form
    230,536.67/318,141.99 = 128,568.60/x
  3. Step 3: Cross multiply
    230,536.67x = 318,141.99 × 128,568.60
  4. Step 4: Simplify right side
    230,536.67x = 40,903,070,255.51
  5. Step 5: Solve for x
    x = 40,903,070,255.51/230,536.67
  6. Step 6: Final answer
    x = 177,425.44

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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.