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Finding the Third Proportional to 134,790 and 211,428

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Solution

The third proportional to 134,790 and 211,428 is: 331,640.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,790 : 211,428 = 211,428 : x
  2. Step 2: Convert to fraction form
    134,790/211,428 = 211,428/x
  3. Step 3: Cross multiply
    134,790x = 211,428 × 211,428
  4. Step 4: Simplify right side
    134,790x = 44,701,799,184
  5. Step 5: Solve for x
    x = 44,701,799,184/134,790
  6. Step 6: Final answer
    x = 331,640.32

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.