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Finding the Fourth Proportional to 281,659.16, 388,626.36 and 160,761.80

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Solution

The fourth proportional to 281,659.16, 388,626.36 and 160,761.80 is: 221,815.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,659.16 : 388,626.36 = 160,761.80 : x
  2. Step 2: Convert to fraction form
    281,659.16/388,626.36 = 160,761.80/x
  3. Step 3: Cross multiply
    281,659.16x = 388,626.36 × 160,761.80
  4. Step 4: Simplify right side
    281,659.16x = 62,476,273,161.05
  5. Step 5: Solve for x
    x = 62,476,273,161.05/281,659.16
  6. Step 6: Final answer
    x = 221,815.17

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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.