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Finding the Fourth Proportional to 307,436.11, 461,243.48 and 127,488.54

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Solution

The fourth proportional to 307,436.11, 461,243.48 and 127,488.54 is: 191,269.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,436.11 : 461,243.48 = 127,488.54 : x
  2. Step 2: Convert to fraction form
    307,436.11/461,243.48 = 127,488.54/x
  3. Step 3: Cross multiply
    307,436.11x = 461,243.48 × 127,488.54
  4. Step 4: Simplify right side
    307,436.11x = 58,803,257,849.72
  5. Step 5: Solve for x
    x = 58,803,257,849.72/307,436.11
  6. Step 6: Final answer
    x = 191,269.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.