Home / 279,093.12-385,136.87-158,242.58

Finding the Fourth Proportional to 279,093.12, 385,136.87 and 158,242.58

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Solution

The fourth proportional to 279,093.12, 385,136.87 and 158,242.58 is: 218,368.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,093.12 : 385,136.87 = 158,242.58 : x
  2. Step 2: Convert to fraction form
    279,093.12/385,136.87 = 158,242.58/x
  3. Step 3: Cross multiply
    279,093.12x = 385,136.87 × 158,242.58
  4. Step 4: Simplify right side
    279,093.12x = 60,945,049,245.03
  5. Step 5: Solve for x
    x = 60,945,049,245.03/279,093.12
  6. Step 6: Final answer
    x = 218,368.15

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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.