Home / 281,531.84-388,523.40-154,214.60

Finding the Fourth Proportional to 281,531.84, 388,523.40 and 154,214.60

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Solution

The fourth proportional to 281,531.84, 388,523.40 and 154,214.60 is: 212,821.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,531.84 : 388,523.40 = 154,214.60 : x
  2. Step 2: Convert to fraction form
    281,531.84/388,523.40 = 154,214.60/x
  3. Step 3: Cross multiply
    281,531.84x = 388,523.40 × 154,214.60
  4. Step 4: Simplify right side
    281,531.84x = 59,915,980,721.64
  5. Step 5: Solve for x
    x = 59,915,980,721.64/281,531.84
  6. Step 6: Final answer
    x = 212,821.33

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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.