Home / 212,940,936.60-319,411,404.90-76,608,605.40

Finding the Fourth Proportional to 212,940,936.60, 319,411,404.90 and 76,608,605.40

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Solution

The fourth proportional to 212,940,936.60, 319,411,404.90 and 76,608,605.40 is: 114,912,908.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,940,936.60 : 319,411,404.90 = 76,608,605.40 : x
  2. Step 2: Convert to fraction form
    212,940,936.60/319,411,404.90 = 76,608,605.40/x
  3. Step 3: Cross multiply
    212,940,936.60x = 319,411,404.90 × 76,608,605.40
  4. Step 4: Simplify right side
    212,940,936.60x = 24,469,662,278,243,728
  5. Step 5: Solve for x
    x = 24,469,662,278,243,728/212,940,936.60
  6. Step 6: Final answer
    x = 114,912,908.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.