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Finding the Fourth Proportional to 447,758.07, 671,725.74 and 127,912.70

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Solution

The fourth proportional to 447,758.07, 671,725.74 and 127,912.70 is: 191,894.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,758.07 : 671,725.74 = 127,912.70 : x
  2. Step 2: Convert to fraction form
    447,758.07/671,725.74 = 127,912.70/x
  3. Step 3: Cross multiply
    447,758.07x = 671,725.74 × 127,912.70
  4. Step 4: Simplify right side
    447,758.07x = 85,922,253,062.90
  5. Step 5: Solve for x
    x = 85,922,253,062.90/447,758.07
  6. Step 6: Final answer
    x = 191,894.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.