Home / 279,936,936.30-420,115,356.45-143,552,117.10

Finding the Fourth Proportional to 279,936,936.30, 420,115,356.45 and 143,552,117.10

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Solution

The fourth proportional to 279,936,936.30, 420,115,356.45 and 143,552,117.10 is: 215,435,839.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,936.30 : 420,115,356.45 = 143,552,117.10 : x
  2. Step 2: Convert to fraction form
    279,936,936.30/420,115,356.45 = 143,552,117.10/x
  3. Step 3: Cross multiply
    279,936,936.30x = 420,115,356.45 × 143,552,117.10
  4. Step 4: Simplify right side
    279,936,936.30x = 60,308,448,844,618,640
  5. Step 5: Solve for x
    x = 60,308,448,844,618,640/279,936,936.30
  6. Step 6: Final answer
    x = 215,435,839.38

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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.