Home / 388,134,067.32-535,620,956.76-211,921,517.28

Finding the Fourth Proportional to 388,134,067.32, 535,620,956.76 and 211,921,517.28

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Solution

The fourth proportional to 388,134,067.32, 535,620,956.76 and 211,921,517.28 is: 292,449,479.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,134,067.32 : 535,620,956.76 = 211,921,517.28 : x
  2. Step 2: Convert to fraction form
    388,134,067.32/535,620,956.76 = 211,921,517.28/x
  3. Step 3: Cross multiply
    388,134,067.32x = 535,620,956.76 × 211,921,517.28
  4. Step 4: Simplify right side
    388,134,067.32x = 113,509,605,843,544,464
  5. Step 5: Solve for x
    x = 113,509,605,843,544,464/388,134,067.32
  6. Step 6: Final answer
    x = 292,449,479.19

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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.