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Finding the Fourth Proportional to 323,663.22, 446,846.61 and 287,753.85

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Solution

The fourth proportional to 323,663.22, 446,846.61 and 287,753.85 is: 397,270.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,663.22 : 446,846.61 = 287,753.85 : x
  2. Step 2: Convert to fraction form
    323,663.22/446,846.61 = 287,753.85/x
  3. Step 3: Cross multiply
    323,663.22x = 446,846.61 × 287,753.85
  4. Step 4: Simplify right side
    323,663.22x = 128,581,832,386.95
  5. Step 5: Solve for x
    x = 128,581,832,386.95/323,663.22
  6. Step 6: Final answer
    x = 397,270.45

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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.