Home / 213,780,400.80-320,670,601.20-189,546,691.20

Finding the Fourth Proportional to 213,780,400.80, 320,670,601.20 and 189,546,691.20

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Solution

The fourth proportional to 213,780,400.80, 320,670,601.20 and 189,546,691.20 is: 284,320,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,780,400.80 : 320,670,601.20 = 189,546,691.20 : x
  2. Step 2: Convert to fraction form
    213,780,400.80/320,670,601.20 = 189,546,691.20/x
  3. Step 3: Cross multiply
    213,780,400.80x = 320,670,601.20 × 189,546,691.20
  4. Step 4: Simplify right side
    213,780,400.80x = 60,782,051,422,574,744
  5. Step 5: Solve for x
    x = 60,782,051,422,574,744/213,780,400.80
  6. Step 6: Final answer
    x = 284,320,036.80

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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.