Home / 231,512,519.10-319,475,543.67-137,430,687.54

Finding the Fourth Proportional to 231,512,519.10, 319,475,543.67 and 137,430,687.54

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Solution

The fourth proportional to 231,512,519.10, 319,475,543.67 and 137,430,687.54 is: 189,647,384.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,512,519.10 : 319,475,543.67 = 137,430,687.54 : x
  2. Step 2: Convert to fraction form
    231,512,519.10/319,475,543.67 = 137,430,687.54/x
  3. Step 3: Cross multiply
    231,512,519.10x = 319,475,543.67 × 137,430,687.54
  4. Step 4: Simplify right side
    231,512,519.10x = 43,905,743,618,783,392
  5. Step 5: Solve for x
    x = 43,905,743,618,783,392/231,512,519.10
  6. Step 6: Final answer
    x = 189,647,384.04

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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.