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Finding the Third Proportional to 147,078 and 310,680

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Solution

The third proportional to 147,078 and 310,680 is: 656,264.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,078 : 310,680 = 310,680 : x
  2. Step 2: Convert to fraction form
    147,078/310,680 = 310,680/x
  3. Step 3: Cross multiply
    147,078x = 310,680 × 310,680
  4. Step 4: Simplify right side
    147,078x = 96,522,062,400
  5. Step 5: Solve for x
    x = 96,522,062,400/147,078
  6. Step 6: Final answer
    x = 656,264.45

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.