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Finding the Third Proportional to 306,045 and 430,215

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Solution

The third proportional to 306,045 and 430,215 is: 604,763.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,045 : 430,215 = 430,215 : x
  2. Step 2: Convert to fraction form
    306,045/430,215 = 430,215/x
  3. Step 3: Cross multiply
    306,045x = 430,215 × 430,215
  4. Step 4: Simplify right side
    306,045x = 185,084,946,225
  5. Step 5: Solve for x
    x = 185,084,946,225/306,045
  6. Step 6: Final answer
    x = 604,763.83

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.