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Finding the Third Proportional to 171,345,811 and 261,036,220

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Solution

The third proportional to 171,345,811 and 261,036,220 is: 397,674,782.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,345,811 : 261,036,220 = 261,036,220 : x
  2. Step 2: Convert to fraction form
    171,345,811/261,036,220 = 261,036,220/x
  3. Step 3: Cross multiply
    171,345,811x = 261,036,220 × 261,036,220
  4. Step 4: Simplify right side
    171,345,811x = 68,139,908,151,888,400
  5. Step 5: Solve for x
    x = 68,139,908,151,888,400/171,345,811
  6. Step 6: Final answer
    x = 397,674,782.68

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.