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Finding the Third Proportional to 212,955.75 and 455,457.38

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Solution

The third proportional to 212,955.75 and 455,457.38 is: 974,105.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,955.75 : 455,457.38 = 455,457.38 : x
  2. Step 2: Convert to fraction form
    212,955.75/455,457.38 = 455,457.38/x
  3. Step 3: Cross multiply
    212,955.75x = 455,457.38 × 455,457.38
  4. Step 4: Simplify right side
    212,955.75x = 207,441,420,441.89
  5. Step 5: Solve for x
    x = 207,441,420,441.89/212,955.75
  6. Step 6: Final answer
    x = 974,105.75

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.