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Finding the Third Proportional to 175,666 and 390,636

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Solution

The third proportional to 175,666 and 390,636 is: 868,673.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,666 : 390,636 = 390,636 : x
  2. Step 2: Convert to fraction form
    175,666/390,636 = 390,636/x
  3. Step 3: Cross multiply
    175,666x = 390,636 × 390,636
  4. Step 4: Simplify right side
    175,666x = 152,596,484,496
  5. Step 5: Solve for x
    x = 152,596,484,496/175,666
  6. Step 6: Final answer
    x = 868,673.99

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.