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Finding the Fourth Proportional to 221,299,812.70, 310,273,234.10 and 221,299,812.70

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Solution

The fourth proportional to 221,299,812.70, 310,273,234.10 and 221,299,812.70 is: 310,273,234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,299,812.70 : 310,273,234.10 = 221,299,812.70 : x
  2. Step 2: Convert to fraction form
    221,299,812.70/310,273,234.10 = 221,299,812.70/x
  3. Step 3: Cross multiply
    221,299,812.70x = 310,273,234.10 × 221,299,812.70
  4. Step 4: Simplify right side
    221,299,812.70x = 68,663,408,592,153,256
  5. Step 5: Solve for x
    x = 68,663,408,592,153,256/221,299,812.70
  6. Step 6: Final answer
    x = 310,273,234.10

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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.