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Finding the Fourth Proportional to 221,962,728.60, 311,258,003.40 and 221,962,728.60

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Solution

The fourth proportional to 221,962,728.60, 311,258,003.40 and 221,962,728.60 is: 311,258,003.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,962,728.60 : 311,258,003.40 = 221,962,728.60 : x
  2. Step 2: Convert to fraction form
    221,962,728.60/311,258,003.40 = 221,962,728.60/x
  3. Step 3: Cross multiply
    221,962,728.60x = 311,258,003.40 × 221,962,728.60
  4. Step 4: Simplify right side
    221,962,728.60x = 69,087,675,733,252,072
  5. Step 5: Solve for x
    x = 69,087,675,733,252,072/221,962,728.60
  6. Step 6: Final answer
    x = 311,258,003.40

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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.