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Finding the Third Proportional to 145,990 and 313,804

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Solution

The third proportional to 145,990 and 313,804 is: 674,518.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,990 : 313,804 = 313,804 : x
  2. Step 2: Convert to fraction form
    145,990/313,804 = 313,804/x
  3. Step 3: Cross multiply
    145,990x = 313,804 × 313,804
  4. Step 4: Simplify right side
    145,990x = 98,472,950,416
  5. Step 5: Solve for x
    x = 98,472,950,416/145,990
  6. Step 6: Final answer
    x = 674,518.46

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.