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Finding the Third Proportional to 187,947 and 423,211.50

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Solution

The third proportional to 187,947 and 423,211.50 is: 952,970.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,947 : 423,211.50 = 423,211.50 : x
  2. Step 2: Convert to fraction form
    187,947/423,211.50 = 423,211.50/x
  3. Step 3: Cross multiply
    187,947x = 423,211.50 × 423,211.50
  4. Step 4: Simplify right side
    187,947x = 179,107,973,732.25
  5. Step 5: Solve for x
    x = 179,107,973,732.25/187,947
  6. Step 6: Final answer
    x = 952,970.64

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Why These Related Problems?

These problems maintain the same ratio (2.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.