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Finding the Fourth Proportional to 323,666.69, 446,851.35 and 287,757.36

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Solution

The fourth proportional to 323,666.69, 446,851.35 and 287,757.36 is: 397,275.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,666.69 : 446,851.35 = 287,757.36 : x
  2. Step 2: Convert to fraction form
    323,666.69/446,851.35 = 287,757.36/x
  3. Step 3: Cross multiply
    323,666.69x = 446,851.35 × 287,757.36
  4. Step 4: Simplify right side
    323,666.69x = 128,584,764,788.44
  5. Step 5: Solve for x
    x = 128,584,764,788.44/323,666.69
  6. Step 6: Final answer
    x = 397,275.25

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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.