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Finding the Third Proportional to 145,652 and 316,216

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Solution

The third proportional to 145,652 and 316,216 is: 686,516.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,652 : 316,216 = 316,216 : x
  2. Step 2: Convert to fraction form
    145,652/316,216 = 316,216/x
  3. Step 3: Cross multiply
    145,652x = 316,216 × 316,216
  4. Step 4: Simplify right side
    145,652x = 99,992,558,656
  5. Step 5: Solve for x
    x = 99,992,558,656/145,652
  6. Step 6: Final answer
    x = 686,516.89

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.