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Finding the Third Proportional to 207,360 and 312,942

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Solution

The third proportional to 207,360 and 312,942 is: 472,283.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,360 : 312,942 = 312,942 : x
  2. Step 2: Convert to fraction form
    207,360/312,942 = 312,942/x
  3. Step 3: Cross multiply
    207,360x = 312,942 × 312,942
  4. Step 4: Simplify right side
    207,360x = 97,932,695,364
  5. Step 5: Solve for x
    x = 97,932,695,364/207,360
  6. Step 6: Final answer
    x = 472,283.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.