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Finding the Fourth Proportional to 228,906,908.70, 343,360,363.05 and 219,978,699.90

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Solution

The fourth proportional to 228,906,908.70, 343,360,363.05 and 219,978,699.90 is: 329,968,049.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,906,908.70 : 343,360,363.05 = 219,978,699.90 : x
  2. Step 2: Convert to fraction form
    228,906,908.70/343,360,363.05 = 219,978,699.90/x
  3. Step 3: Cross multiply
    228,906,908.70x = 343,360,363.05 × 219,978,699.90
  4. Step 4: Simplify right side
    228,906,908.70x = 75,531,966,260,931,008
  5. Step 5: Solve for x
    x = 75,531,966,260,931,008/228,906,908.70
  6. Step 6: Final answer
    x = 329,968,049.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.