Home / 815,308.36-1,223,112.89-268,231.56

Finding the Fourth Proportional to 815,308.36, 1,223,112.89 and 268,231.56

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Solution

The fourth proportional to 815,308.36, 1,223,112.89 and 268,231.56 is: 402,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,308.36 : 1,223,112.89 = 268,231.56 : x
  2. Step 2: Convert to fraction form
    815,308.36/1,223,112.89 = 268,231.56/x
  3. Step 3: Cross multiply
    815,308.36x = 1,223,112.89 × 268,231.56
  4. Step 4: Simplify right side
    815,308.36x = 328,077,478,540.81
  5. Step 5: Solve for x
    x = 328,077,478,540.81/815,308.36
  6. Step 6: Final answer
    x = 402,396.80

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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.