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Finding the Fourth Proportional to 230,906.02, 318,655.72 and 128,928.03

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Solution

The fourth proportional to 230,906.02, 318,655.72 and 128,928.03 is: 177,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,906.02 : 318,655.72 = 128,928.03 : x
  2. Step 2: Convert to fraction form
    230,906.02/318,655.72 = 128,928.03/x
  3. Step 3: Cross multiply
    230,906.02x = 318,655.72 × 128,928.03
  4. Step 4: Simplify right side
    230,906.02x = 41,083,653,583.19
  5. Step 5: Solve for x
    x = 41,083,653,583.19/230,906.02
  6. Step 6: Final answer
    x = 177,923.70

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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.