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Finding the Fourth Proportional to 144,979,653.80, 217,469,480.70 and 80,482,399.40

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Solution

The fourth proportional to 144,979,653.80, 217,469,480.70 and 80,482,399.40 is: 120,723,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,979,653.80 : 217,469,480.70 = 80,482,399.40 : x
  2. Step 2: Convert to fraction form
    144,979,653.80/217,469,480.70 = 80,482,399.40/x
  3. Step 3: Cross multiply
    144,979,653.80x = 217,469,480.70 × 80,482,399.40
  4. Step 4: Simplify right side
    144,979,653.80x = 17,502,465,603,007,992
  5. Step 5: Solve for x
    x = 17,502,465,603,007,992/144,979,653.80
  6. Step 6: Final answer
    x = 120,723,599.10

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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.