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Finding the Third Proportional to 64,310 and 139,312

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Solution

The third proportional to 64,310 and 139,312 is: 301,785.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,310 : 139,312 = 139,312 : x
  2. Step 2: Convert to fraction form
    64,310/139,312 = 139,312/x
  3. Step 3: Cross multiply
    64,310x = 139,312 × 139,312
  4. Step 4: Simplify right side
    64,310x = 19,407,833,344
  5. Step 5: Solve for x
    x = 19,407,833,344/64,310
  6. Step 6: Final answer
    x = 301,785.62

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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.