Home / 262,656,403.20-393,984,604.80-80,879,961.60

Finding the Fourth Proportional to 262,656,403.20, 393,984,604.80 and 80,879,961.60

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Solution

The fourth proportional to 262,656,403.20, 393,984,604.80 and 80,879,961.60 is: 121,319,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,656,403.20 : 393,984,604.80 = 80,879,961.60 : x
  2. Step 2: Convert to fraction form
    262,656,403.20/393,984,604.80 = 80,879,961.60/x
  3. Step 3: Cross multiply
    262,656,403.20x = 393,984,604.80 × 80,879,961.60
  4. Step 4: Simplify right side
    262,656,403.20x = 31,865,459,707,215,176
  5. Step 5: Solve for x
    x = 31,865,459,707,215,176/262,656,403.20
  6. Step 6: Final answer
    x = 121,319,942.40

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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.