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Finding the Third Proportional to 207,280 and 430,136

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Solution

The third proportional to 207,280 and 430,136 is: 892,594.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,280 : 430,136 = 430,136 : x
  2. Step 2: Convert to fraction form
    207,280/430,136 = 430,136/x
  3. Step 3: Cross multiply
    207,280x = 430,136 × 430,136
  4. Step 4: Simplify right side
    207,280x = 185,016,978,496
  5. Step 5: Solve for x
    x = 185,016,978,496/207,280
  6. Step 6: Final answer
    x = 892,594.45

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.