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Finding the Third Proportional to 140,983.50 and 211,428

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Solution

The third proportional to 140,983.50 and 211,428 is: 317,071.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,983.50 : 211,428 = 211,428 : x
  2. Step 2: Convert to fraction form
    140,983.50/211,428 = 211,428/x
  3. Step 3: Cross multiply
    140,983.50x = 211,428 × 211,428
  4. Step 4: Simplify right side
    140,983.50x = 44,701,799,184
  5. Step 5: Solve for x
    x = 44,701,799,184/140,983.50
  6. Step 6: Final answer
    x = 317,071.14

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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.