Home / 215,694,556.20-323,541,834.30-138,210,458.40

Finding the Fourth Proportional to 215,694,556.20, 323,541,834.30 and 138,210,458.40

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Solution

The fourth proportional to 215,694,556.20, 323,541,834.30 and 138,210,458.40 is: 207,315,687.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,694,556.20 : 323,541,834.30 = 138,210,458.40 : x
  2. Step 2: Convert to fraction form
    215,694,556.20/323,541,834.30 = 138,210,458.40/x
  3. Step 3: Cross multiply
    215,694,556.20x = 323,541,834.30 × 138,210,458.40
  4. Step 4: Simplify right side
    215,694,556.20x = 44,716,865,230,179,848
  5. Step 5: Solve for x
    x = 44,716,865,230,179,848/215,694,556.20
  6. Step 6: Final answer
    x = 207,315,687.60

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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.