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Finding the Third Proportional to 155,506 and 334,920

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Solution

The third proportional to 155,506 and 334,920 is: 721,331.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,506 : 334,920 = 334,920 : x
  2. Step 2: Convert to fraction form
    155,506/334,920 = 334,920/x
  3. Step 3: Cross multiply
    155,506x = 334,920 × 334,920
  4. Step 4: Simplify right side
    155,506x = 112,171,406,400
  5. Step 5: Solve for x
    x = 112,171,406,400/155,506
  6. Step 6: Final answer
    x = 721,331.69

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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.