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Finding the Third Proportional to 340,212 and 500,478

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Solution

The third proportional to 340,212 and 500,478 is: 736,241.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,212 : 500,478 = 500,478 : x
  2. Step 2: Convert to fraction form
    340,212/500,478 = 500,478/x
  3. Step 3: Cross multiply
    340,212x = 500,478 × 500,478
  4. Step 4: Simplify right side
    340,212x = 250,478,228,484
  5. Step 5: Solve for x
    x = 250,478,228,484/340,212
  6. Step 6: Final answer
    x = 736,241.60

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.