Home / 395,521,999.20-545,770,190.64-216,858,870.76

Finding the Fourth Proportional to 395,521,999.20, 545,770,190.64 and 216,858,870.76

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Solution

The fourth proportional to 395,521,999.20, 545,770,190.64 and 216,858,870.76 is: 299,237,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,521,999.20 : 545,770,190.64 = 216,858,870.76 : x
  2. Step 2: Convert to fraction form
    395,521,999.20/545,770,190.64 = 216,858,870.76/x
  3. Step 3: Cross multiply
    395,521,999.20x = 545,770,190.64 × 216,858,870.76
  4. Step 4: Simplify right side
    395,521,999.20x = 118,355,107,236,660,320
  5. Step 5: Solve for x
    x = 118,355,107,236,660,320/395,521,999.20
  6. Step 6: Final answer
    x = 299,237,735.13

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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.