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Finding the Fourth Proportional to 230,647.37, 318,293.49 and 128,672.82

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Solution

The fourth proportional to 230,647.37, 318,293.49 and 128,672.82 is: 177,568.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,647.37 : 318,293.49 = 128,672.82 : x
  2. Step 2: Convert to fraction form
    230,647.37/318,293.49 = 128,672.82/x
  3. Step 3: Cross multiply
    230,647.37x = 318,293.49 × 128,672.82
  4. Step 4: Simplify right side
    230,647.37x = 40,955,720,945.94
  5. Step 5: Solve for x
    x = 40,955,720,945.94/230,647.37
  6. Step 6: Final answer
    x = 177,568.56

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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.