Home / 388,530,956.88-536,203,284.84-221,274,290.16

Finding the Fourth Proportional to 388,530,956.88, 536,203,284.84 and 221,274,290.16

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Solution

The fourth proportional to 388,530,956.88, 536,203,284.84 and 221,274,290.16 is: 305,375,927.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,530,956.88 : 536,203,284.84 = 221,274,290.16 : x
  2. Step 2: Convert to fraction form
    388,530,956.88/536,203,284.84 = 221,274,290.16/x
  3. Step 3: Cross multiply
    388,530,956.88x = 536,203,284.84 × 221,274,290.16
  4. Step 4: Simplify right side
    388,530,956.88x = 118,648,001,234,431,280
  5. Step 5: Solve for x
    x = 118,648,001,234,431,280/388,530,956.88
  6. Step 6: Final answer
    x = 305,375,927.28

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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.