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Finding the Fourth Proportional to 275,914.45, 380,759.97 and 155,053.14

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Solution

The fourth proportional to 275,914.45, 380,759.97 and 155,053.14 is: 213,972.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,914.45 : 380,759.97 = 155,053.14 : x
  2. Step 2: Convert to fraction form
    275,914.45/380,759.97 = 155,053.14/x
  3. Step 3: Cross multiply
    275,914.45x = 380,759.97 × 155,053.14
  4. Step 4: Simplify right side
    275,914.45x = 59,038,028,088.41
  5. Step 5: Solve for x
    x = 59,038,028,088.41/275,914.45
  6. Step 6: Final answer
    x = 213,972.22

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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.