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Finding the Third Proportional to 210,647,988 and 279,507,402

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Solution

The third proportional to 210,647,988 and 279,507,402 is: 370,876,496.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,647,988 : 279,507,402 = 279,507,402 : x
  2. Step 2: Convert to fraction form
    210,647,988/279,507,402 = 279,507,402/x
  3. Step 3: Cross multiply
    210,647,988x = 279,507,402 × 279,507,402
  4. Step 4: Simplify right side
    210,647,988x = 78,124,387,772,789,600
  5. Step 5: Solve for x
    x = 78,124,387,772,789,600/210,647,988
  6. Step 6: Final answer
    x = 370,876,496.45

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.