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Finding the Third Proportional to 99,542,664 and 207,031,428

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Solution

The third proportional to 99,542,664 and 207,031,428 is: 430,589,361.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,542,664 : 207,031,428 = 207,031,428 : x
  2. Step 2: Convert to fraction form
    99,542,664/207,031,428 = 207,031,428/x
  3. Step 3: Cross multiply
    99,542,664x = 207,031,428 × 207,031,428
  4. Step 4: Simplify right side
    99,542,664x = 42,862,012,179,719,184
  5. Step 5: Solve for x
    x = 42,862,012,179,719,184/99,542,664
  6. Step 6: Final answer
    x = 430,589,361.96

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.