Home / 388,598,372.40-536,264,843.04-221,334,601.44

Finding the Fourth Proportional to 388,598,372.40, 536,264,843.04 and 221,334,601.44

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Solution

The fourth proportional to 388,598,372.40, 536,264,843.04 and 221,334,601.44 is: 305,441,231.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,598,372.40 : 536,264,843.04 = 221,334,601.44 : x
  2. Step 2: Convert to fraction form
    388,598,372.40/536,264,843.04 = 221,334,601.44/x
  3. Step 3: Cross multiply
    388,598,372.40x = 536,264,843.04 × 221,334,601.44
  4. Step 4: Simplify right side
    388,598,372.40x = 118,693,965,300,542,560
  5. Step 5: Solve for x
    x = 118,693,965,300,542,560/388,598,372.40
  6. Step 6: Final answer
    x = 305,441,231.18

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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.