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Finding the Fourth Proportional to 252,683.55, 379,003.46 and 102,939.66

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Solution

The fourth proportional to 252,683.55, 379,003.46 and 102,939.66 is: 154,400.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,683.55 : 379,003.46 = 102,939.66 : x
  2. Step 2: Convert to fraction form
    252,683.55/379,003.46 = 102,939.66/x
  3. Step 3: Cross multiply
    252,683.55x = 379,003.46 × 102,939.66
  4. Step 4: Simplify right side
    252,683.55x = 39,014,486,796.53
  5. Step 5: Solve for x
    x = 39,014,486,796.53/252,683.55
  6. Step 6: Final answer
    x = 154,400.58

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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.