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Finding the Third Proportional to 191,640 and 403,140

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Solution

The third proportional to 191,640 and 403,140 is: 848,058.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,640 : 403,140 = 403,140 : x
  2. Step 2: Convert to fraction form
    191,640/403,140 = 403,140/x
  3. Step 3: Cross multiply
    191,640x = 403,140 × 403,140
  4. Step 4: Simplify right side
    191,640x = 162,521,859,600
  5. Step 5: Solve for x
    x = 162,521,859,600/191,640
  6. Step 6: Final answer
    x = 848,058.13

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.