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Finding the Fourth Proportional to 388,328, 535,905.60 and 237,395.84

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Solution

The fourth proportional to 388,328, 535,905.60 and 237,395.84 is: 327,614.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,328 : 535,905.60 = 237,395.84 : x
  2. Step 2: Convert to fraction form
    388,328/535,905.60 = 237,395.84/x
  3. Step 3: Cross multiply
    388,328x = 535,905.60 × 237,395.84
  4. Step 4: Simplify right side
    388,328x = 127,221,760,072.70
  5. Step 5: Solve for x
    x = 127,221,760,072.70/388,328
  6. Step 6: Final answer
    x = 327,614.18

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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.