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Finding the Fourth Proportional to 246,472.40, 340,147.79 and 139,040.13

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Solution

The fourth proportional to 246,472.40, 340,147.79 and 139,040.13 is: 191,884.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,472.40 : 340,147.79 = 139,040.13 : x
  2. Step 2: Convert to fraction form
    246,472.40/340,147.79 = 139,040.13/x
  3. Step 3: Cross multiply
    246,472.40x = 340,147.79 × 139,040.13
  4. Step 4: Simplify right side
    246,472.40x = 47,294,194,042.57
  5. Step 5: Solve for x
    x = 47,294,194,042.57/246,472.40
  6. Step 6: Final answer
    x = 191,884.34

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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.