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Finding the Third Proportional to 86,643,489 and 190,290,606

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Solution

The third proportional to 86,643,489 and 190,290,606 is: 417,925,399.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,643,489 : 190,290,606 = 190,290,606 : x
  2. Step 2: Convert to fraction form
    86,643,489/190,290,606 = 190,290,606/x
  3. Step 3: Cross multiply
    86,643,489x = 190,290,606 × 190,290,606
  4. Step 4: Simplify right side
    86,643,489x = 36,210,514,731,847,232
  5. Step 5: Solve for x
    x = 36,210,514,731,847,232/86,643,489
  6. Step 6: Final answer
    x = 417,925,399.24

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.