Home / 281,811.88-388,909.38-154,486.36

Finding the Fourth Proportional to 281,811.88, 388,909.38 and 154,486.36

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Solution

The fourth proportional to 281,811.88, 388,909.38 and 154,486.36 is: 213,196.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,811.88 : 388,909.38 = 154,486.36 : x
  2. Step 2: Convert to fraction form
    281,811.88/388,909.38 = 154,486.36/x
  3. Step 3: Cross multiply
    281,811.88x = 388,909.38 × 154,486.36
  4. Step 4: Simplify right side
    281,811.88x = 60,081,194,486.06
  5. Step 5: Solve for x
    x = 60,081,194,486.06/281,811.88
  6. Step 6: Final answer
    x = 213,196.10

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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.