Home / 311,631,041.64-430,063,497.54-172,399,404.36

Finding the Fourth Proportional to 311,631,041.64, 430,063,497.54 and 172,399,404.36

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Solution

The fourth proportional to 311,631,041.64, 430,063,497.54 and 172,399,404.36 is: 237,918,181.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,631,041.64 : 430,063,497.54 = 172,399,404.36 : x
  2. Step 2: Convert to fraction form
    311,631,041.64/430,063,497.54 = 172,399,404.36/x
  3. Step 3: Cross multiply
    311,631,041.64x = 430,063,497.54 × 172,399,404.36
  4. Step 4: Simplify right side
    311,631,041.64x = 74,142,690,812,874,336
  5. Step 5: Solve for x
    x = 74,142,690,812,874,336/311,631,041.64
  6. Step 6: Final answer
    x = 237,918,181.78

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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.