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Finding the Fourth Proportional to 407,974.44, 611,961.54 and 127,491.72

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Solution

The fourth proportional to 407,974.44, 611,961.54 and 127,491.72 is: 191,237.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,974.44 : 611,961.54 = 127,491.72 : x
  2. Step 2: Convert to fraction form
    407,974.44/611,961.54 = 127,491.72/x
  3. Step 3: Cross multiply
    407,974.44x = 611,961.54 × 127,491.72
  4. Step 4: Simplify right side
    407,974.44x = 78,020,029,308.45
  5. Step 5: Solve for x
    x = 78,020,029,308.45/407,974.44
  6. Step 6: Final answer
    x = 191,237.54

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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.