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Finding the Fourth Proportional to 388,703.27, 536,428.78 and 227,610.22

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Solution

The fourth proportional to 388,703.27, 536,428.78 and 227,610.22 is: 314,112.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,703.27 : 536,428.78 = 227,610.22 : x
  2. Step 2: Convert to fraction form
    388,703.27/536,428.78 = 227,610.22/x
  3. Step 3: Cross multiply
    388,703.27x = 536,428.78 × 227,610.22
  4. Step 4: Simplify right side
    388,703.27x = 122,096,672,630.13
  5. Step 5: Solve for x
    x = 122,096,672,630.13/388,703.27
  6. Step 6: Final answer
    x = 314,112.80

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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.