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Finding the Third Proportional to 191,220 and 280,056

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Solution

The third proportional to 191,220 and 280,056 is: 410,162.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,220 : 280,056 = 280,056 : x
  2. Step 2: Convert to fraction form
    191,220/280,056 = 280,056/x
  3. Step 3: Cross multiply
    191,220x = 280,056 × 280,056
  4. Step 4: Simplify right side
    191,220x = 78,431,363,136
  5. Step 5: Solve for x
    x = 78,431,363,136/191,220
  6. Step 6: Final answer
    x = 410,162.97

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.