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Finding the Third Proportional to 310,311 and 474,492

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Solution

The third proportional to 310,311 and 474,492 is: 725,538.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,311 : 474,492 = 474,492 : x
  2. Step 2: Convert to fraction form
    310,311/474,492 = 474,492/x
  3. Step 3: Cross multiply
    310,311x = 474,492 × 474,492
  4. Step 4: Simplify right side
    310,311x = 225,142,658,064
  5. Step 5: Solve for x
    x = 225,142,658,064/310,311
  6. Step 6: Final answer
    x = 725,538.76

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.