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Finding the Fourth Proportional to 340,955.40, 511,388.30 and 104,321.80

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Solution

The fourth proportional to 340,955.40, 511,388.30 and 104,321.80 is: 156,468.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,955.40 : 511,388.30 = 104,321.80 : x
  2. Step 2: Convert to fraction form
    340,955.40/511,388.30 = 104,321.80/x
  3. Step 3: Cross multiply
    340,955.40x = 511,388.30 × 104,321.80
  4. Step 4: Simplify right side
    340,955.40x = 53,348,947,954.94
  5. Step 5: Solve for x
    x = 53,348,947,954.94/340,955.40
  6. Step 6: Final answer
    x = 156,468.99

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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.