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Finding the Fourth Proportional to 340,872.80, 511,462.80 and 163,311.20

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Solution

The fourth proportional to 340,872.80, 511,462.80 and 163,311.20 is: 245,040.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,872.80 : 511,462.80 = 163,311.20 : x
  2. Step 2: Convert to fraction form
    340,872.80/511,462.80 = 163,311.20/x
  3. Step 3: Cross multiply
    340,872.80x = 511,462.80 × 163,311.20
  4. Step 4: Simplify right side
    340,872.80x = 83,527,603,623.36
  5. Step 5: Solve for x
    x = 83,527,603,623.36/340,872.80
  6. Step 6: Final answer
    x = 245,040.39

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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.