Home / 221,513,249.80-305,702,682.42-122,394,009.16

Finding the Fourth Proportional to 221,513,249.80, 305,702,682.42 and 122,394,009.16

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Solution

The fourth proportional to 221,513,249.80, 305,702,682.42 and 122,394,009.16 is: 168,911,687.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,513,249.80 : 305,702,682.42 = 122,394,009.16 : x
  2. Step 2: Convert to fraction form
    221,513,249.80/305,702,682.42 = 122,394,009.16/x
  3. Step 3: Cross multiply
    221,513,249.80x = 305,702,682.42 × 122,394,009.16
  4. Step 4: Simplify right side
    221,513,249.80x = 37,416,176,912,350,048
  5. Step 5: Solve for x
    x = 37,416,176,912,350,048/221,513,249.80
  6. Step 6: Final answer
    x = 168,911,687.88

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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.