Home / 279,531.14-385,759.30-158,661.12

Finding the Fourth Proportional to 279,531.14, 385,759.30 and 158,661.12

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Solution

The fourth proportional to 279,531.14, 385,759.30 and 158,661.12 is: 218,955.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,531.14 : 385,759.30 = 158,661.12 : x
  2. Step 2: Convert to fraction form
    279,531.14/385,759.30 = 158,661.12/x
  3. Step 3: Cross multiply
    279,531.14x = 385,759.30 × 158,661.12
  4. Step 4: Simplify right side
    279,531.14x = 61,205,002,588.42
  5. Step 5: Solve for x
    x = 61,205,002,588.42/279,531.14
  6. Step 6: Final answer
    x = 218,955.94

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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.