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Finding the Fourth Proportional to 356,491.67, 491,963.42 and 195,343.79

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Solution

The fourth proportional to 356,491.67, 491,963.42 and 195,343.79 is: 269,577.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,491.67 : 491,963.42 = 195,343.79 : x
  2. Step 2: Convert to fraction form
    356,491.67/491,963.42 = 195,343.79/x
  3. Step 3: Cross multiply
    356,491.67x = 491,963.42 × 195,343.79
  4. Step 4: Simplify right side
    356,491.67x = 96,101,997,032.70
  5. Step 5: Solve for x
    x = 96,101,997,032.70/356,491.67
  6. Step 6: Final answer
    x = 269,577.12

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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.