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Finding the Fourth Proportional to 268,791.45, 403,142.99 and 100,267.71

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Solution

The fourth proportional to 268,791.45, 403,142.99 and 100,267.71 is: 150,385.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,791.45 : 403,142.99 = 100,267.71 : x
  2. Step 2: Convert to fraction form
    268,791.45/403,142.99 = 100,267.71/x
  3. Step 3: Cross multiply
    268,791.45x = 403,142.99 × 100,267.71
  4. Step 4: Simplify right side
    268,791.45x = 40,422,223,908.51
  5. Step 5: Solve for x
    x = 40,422,223,908.51/268,791.45
  6. Step 6: Final answer
    x = 150,385.08

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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.