Home / 257,049.37-354,728.05-143,872.12

Finding the Fourth Proportional to 257,049.37, 354,728.05 and 143,872.12

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Solution

The fourth proportional to 257,049.37, 354,728.05 and 143,872.12 is: 198,543.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,049.37 : 354,728.05 = 143,872.12 : x
  2. Step 2: Convert to fraction form
    257,049.37/354,728.05 = 143,872.12/x
  3. Step 3: Cross multiply
    257,049.37x = 354,728.05 × 143,872.12
  4. Step 4: Simplify right side
    257,049.37x = 51,035,476,576.97
  5. Step 5: Solve for x
    x = 51,035,476,576.97/257,049.37
  6. Step 6: Final answer
    x = 198,543.48

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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.