Home / 388,530,954.88-536,203,282.08-221,274,288.16

Finding the Fourth Proportional to 388,530,954.88, 536,203,282.08 and 221,274,288.16

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Solution

The fourth proportional to 388,530,954.88, 536,203,282.08 and 221,274,288.16 is: 305,375,924.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,530,954.88 : 536,203,282.08 = 221,274,288.16 : x
  2. Step 2: Convert to fraction form
    388,530,954.88/536,203,282.08 = 221,274,288.16/x
  3. Step 3: Cross multiply
    388,530,954.88x = 536,203,282.08 × 221,274,288.16
  4. Step 4: Simplify right side
    388,530,954.88x = 118,647,999,551,307,680
  5. Step 5: Solve for x
    x = 118,647,999,551,307,680/388,530,954.88
  6. Step 6: Final answer
    x = 305,375,924.52

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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.