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Finding the Third Proportional to 137,428 and 291,704

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Solution

The third proportional to 137,428 and 291,704 is: 619,169.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,428 : 291,704 = 291,704 : x
  2. Step 2: Convert to fraction form
    137,428/291,704 = 291,704/x
  3. Step 3: Cross multiply
    137,428x = 291,704 × 291,704
  4. Step 4: Simplify right side
    137,428x = 85,091,223,616
  5. Step 5: Solve for x
    x = 85,091,223,616/137,428
  6. Step 6: Final answer
    x = 619,169.48

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.