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Finding the Third Proportional to 173,490 and 378,417

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Solution

The third proportional to 173,490 and 378,417 is: 825,404.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,490 : 378,417 = 378,417 : x
  2. Step 2: Convert to fraction form
    173,490/378,417 = 378,417/x
  3. Step 3: Cross multiply
    173,490x = 378,417 × 378,417
  4. Step 4: Simplify right side
    173,490x = 143,199,425,889
  5. Step 5: Solve for x
    x = 143,199,425,889/173,490
  6. Step 6: Final answer
    x = 825,404.50

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.