Home / 312,604,007.89-431,389,460.56-178,640,399.90

Finding the Fourth Proportional to 312,604,007.89, 431,389,460.56 and 178,640,399.90

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Solution

The fourth proportional to 312,604,007.89, 431,389,460.56 and 178,640,399.90 is: 246,521,425.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,604,007.89 : 431,389,460.56 = 178,640,399.90 : x
  2. Step 2: Convert to fraction form
    312,604,007.89/431,389,460.56 = 178,640,399.90/x
  3. Step 3: Cross multiply
    312,604,007.89x = 431,389,460.56 × 178,640,399.90
  4. Step 4: Simplify right side
    312,604,007.89x = 77,063,585,747,083,680
  5. Step 5: Solve for x
    x = 77,063,585,747,083,680/312,604,007.89
  6. Step 6: Final answer
    x = 246,521,425.84

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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.