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Finding the Third Proportional to 301,728 and 455,668.50

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Solution

The third proportional to 301,728 and 455,668.50 is: 688,148.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,728 : 455,668.50 = 455,668.50 : x
  2. Step 2: Convert to fraction form
    301,728/455,668.50 = 455,668.50/x
  3. Step 3: Cross multiply
    301,728x = 455,668.50 × 455,668.50
  4. Step 4: Simplify right side
    301,728x = 207,633,781,892.25
  5. Step 5: Solve for x
    x = 207,633,781,892.25/301,728
  6. Step 6: Final answer
    x = 688,148.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.