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Finding the Fourth Proportional to 552,886.75, 763,057.02 and 311,216.23

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Solution

The fourth proportional to 552,886.75, 763,057.02 and 311,216.23 is: 429,519.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,886.75 : 763,057.02 = 311,216.23 : x
  2. Step 2: Convert to fraction form
    552,886.75/763,057.02 = 311,216.23/x
  3. Step 3: Cross multiply
    552,886.75x = 763,057.02 × 311,216.23
  4. Step 4: Simplify right side
    552,886.75x = 237,475,729,039.44
  5. Step 5: Solve for x
    x = 237,475,729,039.44/552,886.75
  6. Step 6: Final answer
    x = 429,519.66

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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.