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Finding the Fourth Proportional to 538,295.73, 742,861.48 and 331,485.83

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Solution

The fourth proportional to 538,295.73, 742,861.48 and 331,485.83 is: 457,458.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,295.73 : 742,861.48 = 331,485.83 : x
  2. Step 2: Convert to fraction form
    538,295.73/742,861.48 = 331,485.83/x
  3. Step 3: Cross multiply
    538,295.73x = 742,861.48 × 331,485.83
  4. Step 4: Simplify right side
    538,295.73x = 246,248,052,615.40
  5. Step 5: Solve for x
    x = 246,248,052,615.40/538,295.73
  6. Step 6: Final answer
    x = 457,458.68

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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.