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Finding the Third Proportional to 187,733.50 and 390,999

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Solution

The third proportional to 187,733.50 and 390,999 is: 814,347.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,733.50 : 390,999 = 390,999 : x
  2. Step 2: Convert to fraction form
    187,733.50/390,999 = 390,999/x
  3. Step 3: Cross multiply
    187,733.50x = 390,999 × 390,999
  4. Step 4: Simplify right side
    187,733.50x = 152,880,218,001
  5. Step 5: Solve for x
    x = 152,880,218,001/187,733.50
  6. Step 6: Final answer
    x = 814,347.03

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.