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Finding the Fourth Proportional to 388,651.78, 536,473.62 and 227,558.56

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Solution

The fourth proportional to 388,651.78, 536,473.62 and 227,558.56 is: 314,109.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,651.78 : 536,473.62 = 227,558.56 : x
  2. Step 2: Convert to fraction form
    388,651.78/536,473.62 = 227,558.56/x
  3. Step 3: Cross multiply
    388,651.78x = 536,473.62 × 227,558.56
  4. Step 4: Simplify right side
    388,651.78x = 122,079,164,445.19
  5. Step 5: Solve for x
    x = 122,079,164,445.19/388,651.78
  6. Step 6: Final answer
    x = 314,109.37

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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.