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Finding the Third Proportional to 287,730 and 451,352.25

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Solution

The third proportional to 287,730 and 451,352.25 is: 708,020.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,730 : 451,352.25 = 451,352.25 : x
  2. Step 2: Convert to fraction form
    287,730/451,352.25 = 451,352.25/x
  3. Step 3: Cross multiply
    287,730x = 451,352.25 × 451,352.25
  4. Step 4: Simplify right side
    287,730x = 203,718,853,580.06
  5. Step 5: Solve for x
    x = 203,718,853,580.06/287,730
  6. Step 6: Final answer
    x = 708,020.90

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.