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Finding the Fourth Proportional to 275,669.75, 380,422.81 and 154,816.13

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Solution

The fourth proportional to 275,669.75, 380,422.81 and 154,816.13 is: 213,645.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,669.75 : 380,422.81 = 154,816.13 : x
  2. Step 2: Convert to fraction form
    275,669.75/380,422.81 = 154,816.13/x
  3. Step 3: Cross multiply
    275,669.75x = 380,422.81 × 154,816.13
  4. Step 4: Simplify right side
    275,669.75x = 58,895,584,918.77
  5. Step 5: Solve for x
    x = 58,895,584,918.77/275,669.75
  6. Step 6: Final answer
    x = 213,645.44

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1.5x scale

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.