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Finding the Third Proportional to 214,155 and 318,735

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Solution

The third proportional to 214,155 and 318,735 is: 474,385.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,155 : 318,735 = 318,735 : x
  2. Step 2: Convert to fraction form
    214,155/318,735 = 318,735/x
  3. Step 3: Cross multiply
    214,155x = 318,735 × 318,735
  4. Step 4: Simplify right side
    214,155x = 101,592,000,225
  5. Step 5: Solve for x
    x = 101,592,000,225/214,155
  6. Step 6: Final answer
    x = 474,385.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.