Home / 262,439,907.20-393,659,860.80-80,663,465.60

Finding the Fourth Proportional to 262,439,907.20, 393,659,860.80 and 80,663,465.60

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Solution

The fourth proportional to 262,439,907.20, 393,659,860.80 and 80,663,465.60 is: 120,995,198.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,439,907.20 : 393,659,860.80 = 80,663,465.60 : x
  2. Step 2: Convert to fraction form
    262,439,907.20/393,659,860.80 = 80,663,465.60/x
  3. Step 3: Cross multiply
    262,439,907.20x = 393,659,860.80 × 80,663,465.60
  4. Step 4: Simplify right side
    262,439,907.20x = 31,753,968,639,741,588
  5. Step 5: Solve for x
    x = 31,753,968,639,741,588/262,439,907.20
  6. Step 6: Final answer
    x = 120,995,198.40

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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.