Home / 311,571,238.28-429,941,524.20-172,307,335.64

Finding the Fourth Proportional to 311,571,238.28, 429,941,524.20 and 172,307,335.64

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Solution

The fourth proportional to 311,571,238.28, 429,941,524.20 and 172,307,335.64 is: 237,769,310.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,571,238.28 : 429,941,524.20 = 172,307,335.64 : x
  2. Step 2: Convert to fraction form
    311,571,238.28/429,941,524.20 = 172,307,335.64/x
  3. Step 3: Cross multiply
    311,571,238.28x = 429,941,524.20 × 172,307,335.64
  4. Step 4: Simplify right side
    311,571,238.28x = 74,082,078,515,902,576
  5. Step 5: Solve for x
    x = 74,082,078,515,902,576/311,571,238.28
  6. Step 6: Final answer
    x = 237,769,310.56

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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.