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Finding the Third Proportional to 216,661.50 and 316,966.50

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Solution

The third proportional to 216,661.50 and 316,966.50 is: 463,708.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,661.50 : 316,966.50 = 316,966.50 : x
  2. Step 2: Convert to fraction form
    216,661.50/316,966.50 = 316,966.50/x
  3. Step 3: Cross multiply
    216,661.50x = 316,966.50 × 316,966.50
  4. Step 4: Simplify right side
    216,661.50x = 100,467,762,122.25
  5. Step 5: Solve for x
    x = 100,467,762,122.25/216,661.50
  6. Step 6: Final answer
    x = 463,708.42

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.