Home / 398,640,879.57-550,174,098.51-231,341,218.86

Finding the Fourth Proportional to 398,640,879.57, 550,174,098.51 and 231,341,218.86

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Solution

The fourth proportional to 398,640,879.57, 550,174,098.51 and 231,341,218.86 is: 319,279,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,640,879.57 : 550,174,098.51 = 231,341,218.86 : x
  2. Step 2: Convert to fraction form
    398,640,879.57/550,174,098.51 = 231,341,218.86/x
  3. Step 3: Cross multiply
    398,640,879.57x = 550,174,098.51 × 231,341,218.86
  4. Step 4: Simplify right side
    398,640,879.57x = 127,277,946,534,505,120
  5. Step 5: Solve for x
    x = 127,277,946,534,505,120/398,640,879.57
  6. Step 6: Final answer
    x = 319,279,715.30

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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.