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Finding the Third Proportional to 310,921.50 and 480,126

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Solution

The third proportional to 310,921.50 and 480,126 is: 741,412.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,921.50 : 480,126 = 480,126 : x
  2. Step 2: Convert to fraction form
    310,921.50/480,126 = 480,126/x
  3. Step 3: Cross multiply
    310,921.50x = 480,126 × 480,126
  4. Step 4: Simplify right side
    310,921.50x = 230,520,975,876
  5. Step 5: Solve for x
    x = 230,520,975,876/310,921.50
  6. Step 6: Final answer
    x = 741,412.14

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.