Home / 209,314,891.20-313,986,333.60-71,138,481.60

Finding the Fourth Proportional to 209,314,891.20, 313,986,333.60 and 71,138,481.60

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Solution

The fourth proportional to 209,314,891.20, 313,986,333.60 and 71,138,481.60 is: 106,712,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,314,891.20 : 313,986,333.60 = 71,138,481.60 : x
  2. Step 2: Convert to fraction form
    209,314,891.20/313,986,333.60 = 71,138,481.60/x
  3. Step 3: Cross multiply
    209,314,891.20x = 313,986,333.60 × 71,138,481.60
  4. Step 4: Simplify right side
    209,314,891.20x = 22,336,511,015,455,060
  5. Step 5: Solve for x
    x = 22,336,511,015,455,060/209,314,891.20
  6. Step 6: Final answer
    x = 106,712,479.40

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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.