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Finding the Fourth Proportional to 399,733.94, 551,689.11 and 254,493.34

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Solution

The fourth proportional to 399,733.94, 551,689.11 and 254,493.34 is: 351,236.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,733.94 : 551,689.11 = 254,493.34 : x
  2. Step 2: Convert to fraction form
    399,733.94/551,689.11 = 254,493.34/x
  3. Step 3: Cross multiply
    399,733.94x = 551,689.11 × 254,493.34
  4. Step 4: Simplify right side
    399,733.94x = 140,401,202,866.31
  5. Step 5: Solve for x
    x = 140,401,202,866.31/399,733.94
  6. Step 6: Final answer
    x = 351,236.63

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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.