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Finding the Third Proportional to 216,643.50 and 336,769.50

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Solution

The third proportional to 216,643.50 and 336,769.50 is: 523,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,643.50 : 336,769.50 = 336,769.50 : x
  2. Step 2: Convert to fraction form
    216,643.50/336,769.50 = 336,769.50/x
  3. Step 3: Cross multiply
    216,643.50x = 336,769.50 × 336,769.50
  4. Step 4: Simplify right side
    216,643.50x = 113,413,696,130.25
  5. Step 5: Solve for x
    x = 113,413,696,130.25/216,643.50
  6. Step 6: Final answer
    x = 523,503.80

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.