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Finding the Third Proportional to 287,311.50 and 454,720.50

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Solution

The third proportional to 287,311.50 and 454,720.50 is: 719,674.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,311.50 : 454,720.50 = 454,720.50 : x
  2. Step 2: Convert to fraction form
    287,311.50/454,720.50 = 454,720.50/x
  3. Step 3: Cross multiply
    287,311.50x = 454,720.50 × 454,720.50
  4. Step 4: Simplify right side
    287,311.50x = 206,770,733,120.25
  5. Step 5: Solve for x
    x = 206,770,733,120.25/287,311.50
  6. Step 6: Final answer
    x = 719,674.41

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.