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Finding the Fourth Proportional to 340,803.20, 511,107.60 and 104,088.80

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Solution

The fourth proportional to 340,803.20, 511,107.60 and 104,088.80 is: 156,103.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,803.20 : 511,107.60 = 104,088.80 : x
  2. Step 2: Convert to fraction form
    340,803.20/511,107.60 = 104,088.80/x
  3. Step 3: Cross multiply
    340,803.20x = 511,107.60 × 104,088.80
  4. Step 4: Simplify right side
    340,803.20x = 53,200,576,754.88
  5. Step 5: Solve for x
    x = 53,200,576,754.88/340,803.20
  6. Step 6: Final answer
    x = 156,103.51

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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.