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Finding the Fourth Proportional to 388,296.59, 535,885.47 and 227,141.42

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Solution

The fourth proportional to 388,296.59, 535,885.47 and 227,141.42 is: 313,476.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,296.59 : 535,885.47 = 227,141.42 : x
  2. Step 2: Convert to fraction form
    388,296.59/535,885.47 = 227,141.42/x
  3. Step 3: Cross multiply
    388,296.59x = 535,885.47 × 227,141.42
  4. Step 4: Simplify right side
    388,296.59x = 121,721,783,933.74
  5. Step 5: Solve for x
    x = 121,721,783,933.74/388,296.59
  6. Step 6: Final answer
    x = 313,476.32

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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.