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Finding the Fourth Proportional to 356,361.26, 491,779.13 and 195,212.79

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Solution

The fourth proportional to 356,361.26, 491,779.13 and 195,212.79 is: 269,393.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,361.26 : 491,779.13 = 195,212.79 : x
  2. Step 2: Convert to fraction form
    356,361.26/491,779.13 = 195,212.79/x
  3. Step 3: Cross multiply
    356,361.26x = 491,779.13 × 195,212.79
  4. Step 4: Simplify right side
    356,361.26x = 96,001,575,055.01
  5. Step 5: Solve for x
    x = 96,001,575,055.01/356,361.26
  6. Step 6: Final answer
    x = 269,393.98

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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.