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Finding the Third Proportional to 421,159.50 and 631,532.25

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Solution

The third proportional to 421,159.50 and 631,532.25 is: 946,987.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,159.50 : 631,532.25 = 631,532.25 : x
  2. Step 2: Convert to fraction form
    421,159.50/631,532.25 = 631,532.25/x
  3. Step 3: Cross multiply
    421,159.50x = 631,532.25 × 631,532.25
  4. Step 4: Simplify right side
    421,159.50x = 398,832,982,790.06
  5. Step 5: Solve for x
    x = 398,832,982,790.06/421,159.50
  6. Step 6: Final answer
    x = 946,987.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.