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Finding the Fourth Proportional to 388,647.75, 536,468.10 and 227,554.56

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Solution

The fourth proportional to 388,647.75, 536,468.10 and 227,554.56 is: 314,103.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,647.75 : 536,468.10 = 227,554.56 : x
  2. Step 2: Convert to fraction form
    388,647.75/536,468.10 = 227,554.56/x
  3. Step 3: Cross multiply
    388,647.75x = 536,468.10 × 227,554.56
  4. Step 4: Simplify right side
    388,647.75x = 122,075,762,449.54
  5. Step 5: Solve for x
    x = 122,075,762,449.54/388,647.75
  6. Step 6: Final answer
    x = 314,103.87

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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.