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Finding the Third Proportional to 287,043.75 and 427,285.13

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Solution

The third proportional to 287,043.75 and 427,285.13 is: 636,044.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,043.75 : 427,285.13 = 427,285.13 : x
  2. Step 2: Convert to fraction form
    287,043.75/427,285.13 = 427,285.13/x
  3. Step 3: Cross multiply
    287,043.75x = 427,285.13 × 427,285.13
  4. Step 4: Simplify right side
    287,043.75x = 182,572,578,046.27
  5. Step 5: Solve for x
    x = 182,572,578,046.27/287,043.75
  6. Step 6: Final answer
    x = 636,044.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.