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Finding the Third Proportional to 315,124 and 472,915

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Solution

The third proportional to 315,124 and 472,915 is: 709,716.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,124 : 472,915 = 472,915 : x
  2. Step 2: Convert to fraction form
    315,124/472,915 = 472,915/x
  3. Step 3: Cross multiply
    315,124x = 472,915 × 472,915
  4. Step 4: Simplify right side
    315,124x = 223,648,597,225
  5. Step 5: Solve for x
    x = 223,648,597,225/315,124
  6. Step 6: Final answer
    x = 709,716.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.