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Finding the Fourth Proportional to 811,884.76, 1,217,943.78 and 250,963

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Solution

The fourth proportional to 811,884.76, 1,217,943.78 and 250,963 is: 376,480.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,884.76 : 1,217,943.78 = 250,963 : x
  2. Step 2: Convert to fraction form
    811,884.76/1,217,943.78 = 250,963/x
  3. Step 3: Cross multiply
    811,884.76x = 1,217,943.78 × 250,963
  4. Step 4: Simplify right side
    811,884.76x = 305,658,824,860.14
  5. Step 5: Solve for x
    x = 305,658,824,860.14/811,884.76
  6. Step 6: Final answer
    x = 376,480.55

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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.