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Finding the Third Proportional to 191,857,258 and 421,969,508

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Solution

The third proportional to 191,857,258 and 421,969,508 is: 928,076,777.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,857,258 : 421,969,508 = 421,969,508 : x
  2. Step 2: Convert to fraction form
    191,857,258/421,969,508 = 421,969,508/x
  3. Step 3: Cross multiply
    191,857,258x = 421,969,508 × 421,969,508
  4. Step 4: Simplify right side
    191,857,258x = 178,058,265,681,762,048
  5. Step 5: Solve for x
    x = 178,058,265,681,762,048/191,857,258
  6. Step 6: Final answer
    x = 928,076,777.17

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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.