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Finding the Third Proportional to 212,240 and 318,342

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Solution

The third proportional to 212,240 and 318,342 is: 477,486.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,240 : 318,342 = 318,342 : x
  2. Step 2: Convert to fraction form
    212,240/318,342 = 318,342/x
  3. Step 3: Cross multiply
    212,240x = 318,342 × 318,342
  4. Step 4: Simplify right side
    212,240x = 101,341,628,964
  5. Step 5: Solve for x
    x = 101,341,628,964/212,240
  6. Step 6: Final answer
    x = 477,486.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.