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Finding the Fourth Proportional to 275,149, 379,705.78 and 162,041.48

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Solution

The fourth proportional to 275,149, 379,705.78 and 162,041.48 is: 223,617.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,149 : 379,705.78 = 162,041.48 : x
  2. Step 2: Convert to fraction form
    275,149/379,705.78 = 162,041.48/x
  3. Step 3: Cross multiply
    275,149x = 379,705.78 × 162,041.48
  4. Step 4: Simplify right side
    275,149x = 61,528,086,555.75
  5. Step 5: Solve for x
    x = 61,528,086,555.75/275,149
  6. Step 6: Final answer
    x = 223,617.34

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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.