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Finding the Third Proportional to 90,405,579.75 and 196,222,968.75

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Solution

The third proportional to 90,405,579.75 and 196,222,968.75 is: 425,896,870.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,405,579.75 : 196,222,968.75 = 196,222,968.75 : x
  2. Step 2: Convert to fraction form
    90,405,579.75/196,222,968.75 = 196,222,968.75/x
  3. Step 3: Cross multiply
    90,405,579.75x = 196,222,968.75 × 196,222,968.75
  4. Step 4: Simplify right side
    90,405,579.75x = 38,503,453,465,063,480
  5. Step 5: Solve for x
    x = 38,503,453,465,063,480/90,405,579.75
  6. Step 6: Final answer
    x = 425,896,870.21

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.