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Finding the Fourth Proportional to 361,243.38, 498,468.60 and 208,287.30

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Solution

The fourth proportional to 361,243.38, 498,468.60 and 208,287.30 is: 287,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,243.38 : 498,468.60 = 208,287.30 : x
  2. Step 2: Convert to fraction form
    361,243.38/498,468.60 = 208,287.30/x
  3. Step 3: Cross multiply
    361,243.38x = 498,468.60 × 208,287.30
  4. Step 4: Simplify right side
    361,243.38x = 103,824,678,828.78
  5. Step 5: Solve for x
    x = 103,824,678,828.78/361,243.38
  6. Step 6: Final answer
    x = 287,409.22

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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.