Home / 398,769.90-550,486.74-245,835.42

Finding the Fourth Proportional to 398,769.90, 550,486.74 and 245,835.42

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Solution

The fourth proportional to 398,769.90, 550,486.74 and 245,835.42 is: 339,366.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,769.90 : 550,486.74 = 245,835.42 : x
  2. Step 2: Convert to fraction form
    398,769.90/550,486.74 = 245,835.42/x
  3. Step 3: Cross multiply
    398,769.90x = 550,486.74 × 245,835.42
  4. Step 4: Simplify right side
    398,769.90x = 135,329,138,932.33
  5. Step 5: Solve for x
    x = 135,329,138,932.33/398,769.90
  6. Step 6: Final answer
    x = 339,366.48

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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.