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Finding the Third Proportional to 217,871,279 and 470,172,769

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Solution

The third proportional to 217,871,279 and 470,172,769 is: 1,014,646,968.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,871,279 : 470,172,769 = 470,172,769 : x
  2. Step 2: Convert to fraction form
    217,871,279/470,172,769 = 470,172,769/x
  3. Step 3: Cross multiply
    217,871,279x = 470,172,769 × 470,172,769
  4. Step 4: Simplify right side
    217,871,279x = 221,062,432,709,127,360
  5. Step 5: Solve for x
    x = 221,062,432,709,127,360/217,871,279
  6. Step 6: Final answer
    x = 1,014,646,968.26

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.