Home / 279,128.25-385,185.26-158,277.68

Finding the Fourth Proportional to 279,128.25, 385,185.26 and 158,277.68

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Solution

The fourth proportional to 279,128.25, 385,185.26 and 158,277.68 is: 218,416.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,128.25 : 385,185.26 = 158,277.68 : x
  2. Step 2: Convert to fraction form
    279,128.25/385,185.26 = 158,277.68/x
  3. Step 3: Cross multiply
    279,128.25x = 385,185.26 × 158,277.68
  4. Step 4: Simplify right side
    279,128.25x = 60,966,226,605.68
  5. Step 5: Solve for x
    x = 60,966,226,605.68/279,128.25
  6. Step 6: Final answer
    x = 218,416.54

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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.