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Finding the Fourth Proportional to 281,282.66, 388,128.33 and 170,843.87

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Solution

The fourth proportional to 281,282.66, 388,128.33 and 170,843.87 is: 235,739.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,282.66 : 388,128.33 = 170,843.87 : x
  2. Step 2: Convert to fraction form
    281,282.66/388,128.33 = 170,843.87/x
  3. Step 3: Cross multiply
    281,282.66x = 388,128.33 × 170,843.87
  4. Step 4: Simplify right side
    281,282.66x = 66,309,344,828.01
  5. Step 5: Solve for x
    x = 66,309,344,828.01/281,282.66
  6. Step 6: Final answer
    x = 235,739.19

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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.