Home / 320,837.70-481,256.55-221,304.90

Finding the Fourth Proportional to 320,837.70, 481,256.55 and 221,304.90

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Solution

The fourth proportional to 320,837.70, 481,256.55 and 221,304.90 is: 331,957.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,837.70 : 481,256.55 = 221,304.90 : x
  2. Step 2: Convert to fraction form
    320,837.70/481,256.55 = 221,304.90/x
  3. Step 3: Cross multiply
    320,837.70x = 481,256.55 × 221,304.90
  4. Step 4: Simplify right side
    320,837.70x = 106,504,432,672.10
  5. Step 5: Solve for x
    x = 106,504,432,672.10/320,837.70
  6. Step 6: Final answer
    x = 331,957.35

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1.5x scale

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.