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Finding the Fourth Proportional to 328,649.26, 493,028.37 and 115,361.83

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Solution

The fourth proportional to 328,649.26, 493,028.37 and 115,361.83 is: 173,061.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,649.26 : 493,028.37 = 115,361.83 : x
  2. Step 2: Convert to fraction form
    328,649.26/493,028.37 = 115,361.83/x
  3. Step 3: Cross multiply
    328,649.26x = 493,028.37 × 115,361.83
  4. Step 4: Simplify right side
    328,649.26x = 56,876,651,963.17
  5. Step 5: Solve for x
    x = 56,876,651,963.17/328,649.26
  6. Step 6: Final answer
    x = 173,061.86

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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.