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Finding the Fourth Proportional to 388,204.65, 535,718.61 and 227,029.23

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Solution

The fourth proportional to 388,204.65, 535,718.61 and 227,029.23 is: 313,298.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,204.65 : 535,718.61 = 227,029.23 : x
  2. Step 2: Convert to fraction form
    388,204.65/535,718.61 = 227,029.23/x
  3. Step 3: Cross multiply
    388,204.65x = 535,718.61 × 227,029.23
  4. Step 4: Simplify right side
    388,204.65x = 121,623,783,524.97
  5. Step 5: Solve for x
    x = 121,623,783,524.97/388,204.65
  6. Step 6: Final answer
    x = 313,298.11

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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.