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Finding the Third Proportional to 178,921 and 385,865.50

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Solution

The third proportional to 178,921 and 385,865.50 is: 832,167.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,921 : 385,865.50 = 385,865.50 : x
  2. Step 2: Convert to fraction form
    178,921/385,865.50 = 385,865.50/x
  3. Step 3: Cross multiply
    178,921x = 385,865.50 × 385,865.50
  4. Step 4: Simplify right side
    178,921x = 148,892,184,090.25
  5. Step 5: Solve for x
    x = 148,892,184,090.25/178,921
  6. Step 6: Final answer
    x = 832,167.18

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.