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Finding the Third Proportional to 147,558 and 316,620

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Solution

The third proportional to 147,558 and 316,620 is: 679,381.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,558 : 316,620 = 316,620 : x
  2. Step 2: Convert to fraction form
    147,558/316,620 = 316,620/x
  3. Step 3: Cross multiply
    147,558x = 316,620 × 316,620
  4. Step 4: Simplify right side
    147,558x = 100,248,224,400
  5. Step 5: Solve for x
    x = 100,248,224,400/147,558
  6. Step 6: Final answer
    x = 679,381.83

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.