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Finding the Fourth Proportional to 388,709.87, 536,236.35 and 227,466.02

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Solution

The fourth proportional to 388,709.87, 536,236.35 and 227,466.02 is: 313,795.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,709.87 : 536,236.35 = 227,466.02 : x
  2. Step 2: Convert to fraction form
    388,709.87/536,236.35 = 227,466.02/x
  3. Step 3: Cross multiply
    388,709.87x = 536,236.35 × 227,466.02
  4. Step 4: Simplify right side
    388,709.87x = 121,975,548,313.83
  5. Step 5: Solve for x
    x = 121,975,548,313.83/388,709.87
  6. Step 6: Final answer
    x = 313,795.86

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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.