Home / 311,644,961.12-430,066,857.62-172,416,719.32

Finding the Fourth Proportional to 311,644,961.12, 430,066,857.62 and 172,416,719.32

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Solution

The fourth proportional to 311,644,961.12, 430,066,857.62 and 172,416,719.32 is: 237,933,308.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,644,961.12 : 430,066,857.62 = 172,416,719.32 : x
  2. Step 2: Convert to fraction form
    311,644,961.12/430,066,857.62 = 172,416,719.32/x
  3. Step 3: Cross multiply
    311,644,961.12x = 430,066,857.62 × 172,416,719.32
  4. Step 4: Simplify right side
    311,644,961.12x = 74,150,716,679,101,936
  5. Step 5: Solve for x
    x = 74,150,716,679,101,936/311,644,961.12
  6. Step 6: Final answer
    x = 237,933,308.51

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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.