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Finding the Fourth Proportional to 388,715.16, 536,243.54 and 227,470.44

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Solution

The fourth proportional to 388,715.16, 536,243.54 and 227,470.44 is: 313,801.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,715.16 : 536,243.54 = 227,470.44 : x
  2. Step 2: Convert to fraction form
    388,715.16/536,243.54 = 227,470.44/x
  3. Step 3: Cross multiply
    388,715.16x = 536,243.54 × 227,470.44
  4. Step 4: Simplify right side
    388,715.16x = 121,979,553,990.96
  5. Step 5: Solve for x
    x = 121,979,553,990.96/388,715.16
  6. Step 6: Final answer
    x = 313,801.90

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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.