Home / 215,228,961.68-297,015,238.72-121,143,055.28

Finding the Fourth Proportional to 215,228,961.68, 297,015,238.72 and 121,143,055.28

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Solution

The fourth proportional to 215,228,961.68, 297,015,238.72 and 121,143,055.28 is: 167,177,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,228,961.68 : 297,015,238.72 = 121,143,055.28 : x
  2. Step 2: Convert to fraction form
    215,228,961.68/297,015,238.72 = 121,143,055.28/x
  3. Step 3: Cross multiply
    215,228,961.68x = 297,015,238.72 × 121,143,055.28
  4. Step 4: Simplify right side
    215,228,961.68x = 35,981,333,483,259,360
  5. Step 5: Solve for x
    x = 35,981,333,483,259,360/215,228,961.68
  6. Step 6: Final answer
    x = 167,177,006.30

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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.