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Finding the Fourth Proportional to 221,276,722.70, 310,240,908.10 and 221,276,722.70

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Solution

The fourth proportional to 221,276,722.70, 310,240,908.10 and 221,276,722.70 is: 310,240,908.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,276,722.70 : 310,240,908.10 = 221,276,722.70 : x
  2. Step 2: Convert to fraction form
    221,276,722.70/310,240,908.10 = 221,276,722.70/x
  3. Step 3: Cross multiply
    221,276,722.70x = 310,240,908.10 × 221,276,722.70
  4. Step 4: Simplify right side
    221,276,722.70x = 68,649,091,391,839,888
  5. Step 5: Solve for x
    x = 68,649,091,391,839,888/221,276,722.70
  6. Step 6: Final answer
    x = 310,240,908.10

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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.