Home / 221,171,004.12-305,216,115.48-123,385,860.12

Finding the Fourth Proportional to 221,171,004.12, 305,216,115.48 and 123,385,860.12

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Solution

The fourth proportional to 221,171,004.12, 305,216,115.48 and 123,385,860.12 is: 170,272,559.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,171,004.12 : 305,216,115.48 = 123,385,860.12 : x
  2. Step 2: Convert to fraction form
    221,171,004.12/305,216,115.48 = 123,385,860.12/x
  3. Step 3: Cross multiply
    221,171,004.12x = 305,216,115.48 × 123,385,860.12
  4. Step 4: Simplify right side
    221,171,004.12x = 37,659,352,930,985,048
  5. Step 5: Solve for x
    x = 37,659,352,930,985,048/221,171,004.12
  6. Step 6: Final answer
    x = 170,272,559.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.