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Finding the Fourth Proportional to 356,378.85, 491,801.36 and 195,243.93

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Solution

The fourth proportional to 356,378.85, 491,801.36 and 195,243.93 is: 269,435.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,378.85 : 491,801.36 = 195,243.93 : x
  2. Step 2: Convert to fraction form
    356,378.85/491,801.36 = 195,243.93/x
  3. Step 3: Cross multiply
    356,378.85x = 491,801.36 × 195,243.93
  4. Step 4: Simplify right side
    356,378.85x = 96,021,229,329.53
  5. Step 5: Solve for x
    x = 96,021,229,329.53/356,378.85
  6. Step 6: Final answer
    x = 269,435.82

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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.