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Finding the Third Proportional to 121,789,332 and 199,935,540

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Solution

The third proportional to 121,789,332 and 199,935,540 is: 328,224,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,789,332 : 199,935,540 = 199,935,540 : x
  2. Step 2: Convert to fraction form
    121,789,332/199,935,540 = 199,935,540/x
  3. Step 3: Cross multiply
    121,789,332x = 199,935,540 × 199,935,540
  4. Step 4: Simplify right side
    121,789,332x = 39,974,220,155,091,600
  5. Step 5: Solve for x
    x = 39,974,220,155,091,600/121,789,332
  6. Step 6: Final answer
    x = 328,224,315.70

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.