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Finding the Third Proportional to 291,572 and 435,110

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Solution

The third proportional to 291,572 and 435,110 is: 649,310.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,572 : 435,110 = 435,110 : x
  2. Step 2: Convert to fraction form
    291,572/435,110 = 435,110/x
  3. Step 3: Cross multiply
    291,572x = 435,110 × 435,110
  4. Step 4: Simplify right side
    291,572x = 189,320,712,100
  5. Step 5: Solve for x
    x = 189,320,712,100/291,572
  6. Step 6: Final answer
    x = 649,310.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.