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Finding the Third Proportional to 287,239.50 and 617,125.50

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Solution

The third proportional to 287,239.50 and 617,125.50 is: 1,325,875.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,239.50 : 617,125.50 = 617,125.50 : x
  2. Step 2: Convert to fraction form
    287,239.50/617,125.50 = 617,125.50/x
  3. Step 3: Cross multiply
    287,239.50x = 617,125.50 × 617,125.50
  4. Step 4: Simplify right side
    287,239.50x = 380,843,882,750.25
  5. Step 5: Solve for x
    x = 380,843,882,750.25/287,239.50
  6. Step 6: Final answer
    x = 1,325,875.73

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.