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Finding the Fourth Proportional to 253,912.97, 350,399.95 and 140,735.72

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Solution

The fourth proportional to 253,912.97, 350,399.95 and 140,735.72 is: 194,215.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,912.97 : 350,399.95 = 140,735.72 : x
  2. Step 2: Convert to fraction form
    253,912.97/350,399.95 = 140,735.72/x
  3. Step 3: Cross multiply
    253,912.97x = 350,399.95 × 140,735.72
  4. Step 4: Simplify right side
    253,912.97x = 49,313,788,461.37
  5. Step 5: Solve for x
    x = 49,313,788,461.37/253,912.97
  6. Step 6: Final answer
    x = 194,215.32

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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.