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Finding the Third Proportional to 310,927.50 and 480,135

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Solution

The third proportional to 310,927.50 and 480,135 is: 741,425.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,927.50 : 480,135 = 480,135 : x
  2. Step 2: Convert to fraction form
    310,927.50/480,135 = 480,135/x
  3. Step 3: Cross multiply
    310,927.50x = 480,135 × 480,135
  4. Step 4: Simplify right side
    310,927.50x = 230,529,618,225
  5. Step 5: Solve for x
    x = 230,529,618,225/310,927.50
  6. Step 6: Final answer
    x = 741,425.63

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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.