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Finding the Fourth Proportional to 207,597,258.80, 311,183,311.80 and 121,291,240.40

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Solution

The fourth proportional to 207,597,258.80, 311,183,311.80 and 121,291,240.40 is: 181,812,660.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,597,258.80 : 311,183,311.80 = 121,291,240.40 : x
  2. Step 2: Convert to fraction form
    207,597,258.80/311,183,311.80 = 121,291,240.40/x
  3. Step 3: Cross multiply
    207,597,258.80x = 311,183,311.80 × 121,291,240.40
  4. Step 4: Simplify right side
    207,597,258.80x = 37,743,809,880,001,960
  5. Step 5: Solve for x
    x = 37,743,809,880,001,960/207,597,258.80
  6. Step 6: Final answer
    x = 181,812,660.24

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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.