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Finding the Fourth Proportional to 300,348,066.20, 421,696,616.20 and 300,348,066.20

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Solution

The fourth proportional to 300,348,066.20, 421,696,616.20 and 300,348,066.20 is: 421,696,616.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,348,066.20 : 421,696,616.20 = 300,348,066.20 : x
  2. Step 2: Convert to fraction form
    300,348,066.20/421,696,616.20 = 300,348,066.20/x
  3. Step 3: Cross multiply
    300,348,066.20x = 421,696,616.20 × 300,348,066.20
  4. Step 4: Simplify right side
    300,348,066.20x = 126,655,763,198,753,584
  5. Step 5: Solve for x
    x = 126,655,763,198,753,584/300,348,066.20
  6. Step 6: Final answer
    x = 421,696,616.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.