Home / 285,327.54-428,074.64-127,519.09

Finding the Fourth Proportional to 285,327.54, 428,074.64 and 127,519.09

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Solution

The fourth proportional to 285,327.54, 428,074.64 and 127,519.09 is: 191,315.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,327.54 : 428,074.64 = 127,519.09 : x
  2. Step 2: Convert to fraction form
    285,327.54/428,074.64 = 127,519.09/x
  3. Step 3: Cross multiply
    285,327.54x = 428,074.64 × 127,519.09
  4. Step 4: Simplify right side
    285,327.54x = 54,587,686,837.10
  5. Step 5: Solve for x
    x = 54,587,686,837.10/285,327.54
  6. Step 6: Final answer
    x = 191,315.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.