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Finding the Third Proportional to 191,856,858.75 and 421,968,719.25

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Solution

The third proportional to 191,856,858.75 and 421,968,719.25 is: 928,075,238.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,856,858.75 : 421,968,719.25 = 421,968,719.25 : x
  2. Step 2: Convert to fraction form
    191,856,858.75/421,968,719.25 = 421,968,719.25/x
  3. Step 3: Cross multiply
    191,856,858.75x = 421,968,719.25 × 421,968,719.25
  4. Step 4: Simplify right side
    191,856,858.75x = 178,057,600,025,485,312
  5. Step 5: Solve for x
    x = 178,057,600,025,485,312/191,856,858.75
  6. Step 6: Final answer
    x = 928,075,238.93

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