Home / 215,906.40-323,422.20-122,302.80

Finding the Fourth Proportional to 215,906.40, 323,422.20 and 122,302.80

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Solution

The fourth proportional to 215,906.40, 323,422.20 and 122,302.80 is: 183,206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,906.40 : 323,422.20 = 122,302.80 : x
  2. Step 2: Convert to fraction form
    215,906.40/323,422.20 = 122,302.80/x
  3. Step 3: Cross multiply
    215,906.40x = 323,422.20 × 122,302.80
  4. Step 4: Simplify right side
    215,906.40x = 39,555,440,642.16
  5. Step 5: Solve for x
    x = 39,555,440,642.16/215,906.40
  6. Step 6: Final answer
    x = 183,206.43

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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.