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Finding the Fourth Proportional to 388,123.92, 535,857.11 and 265,821.41

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Solution

The fourth proportional to 388,123.92, 535,857.11 and 265,821.41 is: 367,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,123.92 : 535,857.11 = 265,821.41 : x
  2. Step 2: Convert to fraction form
    388,123.92/535,857.11 = 265,821.41/x
  3. Step 3: Cross multiply
    388,123.92x = 535,857.11 × 265,821.41
  4. Step 4: Simplify right side
    388,123.92x = 142,442,292,538.73
  5. Step 5: Solve for x
    x = 142,442,292,538.73/388,123.92
  6. Step 6: Final answer
    x = 367,002.10

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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.