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Finding the Third Proportional to 98,689,578 and 213,853,818

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Solution

The third proportional to 98,689,578 and 213,853,818 is: 463,407,143.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,689,578 : 213,853,818 = 213,853,818 : x
  2. Step 2: Convert to fraction form
    98,689,578/213,853,818 = 213,853,818/x
  3. Step 3: Cross multiply
    98,689,578x = 213,853,818 × 213,853,818
  4. Step 4: Simplify right side
    98,689,578x = 45,733,455,473,177,120
  5. Step 5: Solve for x
    x = 45,733,455,473,177,120/98,689,578
  6. Step 6: Final answer
    x = 463,407,143.89

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.