Home / 221,255.74-305,356.44-135,265.06

Finding the Fourth Proportional to 221,255.74, 305,356.44 and 135,265.06

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Solution

The fourth proportional to 221,255.74, 305,356.44 and 135,265.06 is: 186,680.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,255.74 : 305,356.44 = 135,265.06 : x
  2. Step 2: Convert to fraction form
    221,255.74/305,356.44 = 135,265.06/x
  3. Step 3: Cross multiply
    221,255.74x = 305,356.44 × 135,265.06
  4. Step 4: Simplify right side
    221,255.74x = 41,304,057,177.99
  5. Step 5: Solve for x
    x = 41,304,057,177.99/221,255.74
  6. Step 6: Final answer
    x = 186,680.16

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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.