Home / 281,781.09-388,862.61-152,723.69

Finding the Fourth Proportional to 281,781.09, 388,862.61 and 152,723.69

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Solution

The fourth proportional to 281,781.09, 388,862.61 and 152,723.69 is: 210,761.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,781.09 : 388,862.61 = 152,723.69 : x
  2. Step 2: Convert to fraction form
    281,781.09/388,862.61 = 152,723.69/x
  3. Step 3: Cross multiply
    281,781.09x = 388,862.61 × 152,723.69
  4. Step 4: Simplify right side
    281,781.09x = 59,388,531,643.44
  5. Step 5: Solve for x
    x = 59,388,531,643.44/281,781.09
  6. Step 6: Final answer
    x = 210,761.24

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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.