Home / 305,395,579.35-421,433,489.34-173,233,738.71

Finding the Fourth Proportional to 305,395,579.35, 421,433,489.34 and 173,233,738.71

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Solution

The fourth proportional to 305,395,579.35, 421,433,489.34 and 173,233,738.71 is: 239,055,519.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,395,579.35 : 421,433,489.34 = 173,233,738.71 : x
  2. Step 2: Convert to fraction form
    305,395,579.35/421,433,489.34 = 173,233,738.71/x
  3. Step 3: Cross multiply
    305,395,579.35x = 421,433,489.34 × 173,233,738.71
  4. Step 4: Simplify right side
    305,395,579.35x = 73,006,498,975,969,136
  5. Step 5: Solve for x
    x = 73,006,498,975,969,136/305,395,579.35
  6. Step 6: Final answer
    x = 239,055,519.83

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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.