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Finding the Fourth Proportional to 388,713.15, 536,240.79 and 227,468.43

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Solution

The fourth proportional to 388,713.15, 536,240.79 and 227,468.43 is: 313,799.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,713.15 : 536,240.79 = 227,468.43 : x
  2. Step 2: Convert to fraction form
    388,713.15/536,240.79 = 227,468.43/x
  3. Step 3: Cross multiply
    388,713.15x = 536,240.79 × 227,468.43
  4. Step 4: Simplify right side
    388,713.15x = 121,977,850,603.26
  5. Step 5: Solve for x
    x = 121,977,850,603.26/388,713.15
  6. Step 6: Final answer
    x = 313,799.14

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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.