Home / 221,288.80-331,058.40-192,031.60

Finding the Fourth Proportional to 221,288.80, 331,058.40 and 192,031.60

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Solution

The fourth proportional to 221,288.80, 331,058.40 and 192,031.60 is: 287,288.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,288.80 : 331,058.40 = 192,031.60 : x
  2. Step 2: Convert to fraction form
    221,288.80/331,058.40 = 192,031.60/x
  3. Step 3: Cross multiply
    221,288.80x = 331,058.40 × 192,031.60
  4. Step 4: Simplify right side
    221,288.80x = 63,573,674,245.44
  5. Step 5: Solve for x
    x = 63,573,674,245.44/221,288.80
  6. Step 6: Final answer
    x = 287,288.26

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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.