Home / 318,889,805.42-440,067,936.99-172,212,089.42

Finding the Fourth Proportional to 318,889,805.42, 440,067,936.99 and 172,212,089.42

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Solution

The fourth proportional to 318,889,805.42, 440,067,936.99 and 172,212,089.42 is: 237,652,686.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,889,805.42 : 440,067,936.99 = 172,212,089.42 : x
  2. Step 2: Convert to fraction form
    318,889,805.42/440,067,936.99 = 172,212,089.42/x
  3. Step 3: Cross multiply
    318,889,805.42x = 440,067,936.99 × 172,212,089.42
  4. Step 4: Simplify right side
    318,889,805.42x = 75,785,018,915,796,800
  5. Step 5: Solve for x
    x = 75,785,018,915,796,800/318,889,805.42
  6. Step 6: Final answer
    x = 237,652,686.38

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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.