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Finding the Fourth Proportional to 246,263.90, 339,817.28 and 138,838.46

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Solution

The fourth proportional to 246,263.90, 339,817.28 and 138,838.46 is: 191,581.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,263.90 : 339,817.28 = 138,838.46 : x
  2. Step 2: Convert to fraction form
    246,263.90/339,817.28 = 138,838.46/x
  3. Step 3: Cross multiply
    246,263.90x = 339,817.28 × 138,838.46
  4. Step 4: Simplify right side
    246,263.90x = 47,179,705,443.31
  5. Step 5: Solve for x
    x = 47,179,705,443.31/246,263.90
  6. Step 6: Final answer
    x = 191,581.90

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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.