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Finding the Fourth Proportional to 246,978.40, 369,949.20 and 136,040.80

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Solution

The fourth proportional to 246,978.40, 369,949.20 and 136,040.80 is: 203,775.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,978.40 : 369,949.20 = 136,040.80 : x
  2. Step 2: Convert to fraction form
    246,978.40/369,949.20 = 136,040.80/x
  3. Step 3: Cross multiply
    246,978.40x = 369,949.20 × 136,040.80
  4. Step 4: Simplify right side
    246,978.40x = 50,328,185,127.36
  5. Step 5: Solve for x
    x = 50,328,185,127.36/246,978.40
  6. Step 6: Final answer
    x = 203,775.65

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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.