Home / 398,640,860.68-550,174,072.44-231,341,199.97

Finding the Fourth Proportional to 398,640,860.68, 550,174,072.44 and 231,341,199.97

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Solution

The fourth proportional to 398,640,860.68, 550,174,072.44 and 231,341,199.97 is: 319,279,689.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,640,860.68 : 550,174,072.44 = 231,341,199.97 : x
  2. Step 2: Convert to fraction form
    398,640,860.68/550,174,072.44 = 231,341,199.97/x
  3. Step 3: Cross multiply
    398,640,860.68x = 550,174,072.44 × 231,341,199.97
  4. Step 4: Simplify right side
    398,640,860.68x = 127,277,930,110,529,968
  5. Step 5: Solve for x
    x = 127,277,930,110,529,968/398,640,860.68
  6. Step 6: Final answer
    x = 319,279,689.23

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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.