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Finding the Fourth Proportional to 246,346.56, 340,020.18 and 138,978.87

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Solution

The fourth proportional to 246,346.56, 340,020.18 and 138,978.87 is: 191,825.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,346.56 : 340,020.18 = 138,978.87 : x
  2. Step 2: Convert to fraction form
    246,346.56/340,020.18 = 138,978.87/x
  3. Step 3: Cross multiply
    246,346.56x = 340,020.18 × 138,978.87
  4. Step 4: Simplify right side
    246,346.56x = 47,255,620,393.60
  5. Step 5: Solve for x
    x = 47,255,620,393.60/246,346.56
  6. Step 6: Final answer
    x = 191,825.78

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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.