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Finding the Fourth Proportional to 399,880.56, 551,851.92 and 230,115.36

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Solution

The fourth proportional to 399,880.56, 551,851.92 and 230,115.36 is: 317,568.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,880.56 : 551,851.92 = 230,115.36 : x
  2. Step 2: Convert to fraction form
    399,880.56/551,851.92 = 230,115.36/x
  3. Step 3: Cross multiply
    399,880.56x = 551,851.92 × 230,115.36
  4. Step 4: Simplify right side
    399,880.56x = 126,989,603,237.49
  5. Step 5: Solve for x
    x = 126,989,603,237.49/399,880.56
  6. Step 6: Final answer
    x = 317,568.83

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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.