Home / 215,733.80-323,600.70-121,255.40

Finding the Fourth Proportional to 215,733.80, 323,600.70 and 121,255.40

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Solution

The fourth proportional to 215,733.80, 323,600.70 and 121,255.40 is: 181,883.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,733.80 : 323,600.70 = 121,255.40 : x
  2. Step 2: Convert to fraction form
    215,733.80/323,600.70 = 121,255.40/x
  3. Step 3: Cross multiply
    215,733.80x = 323,600.70 × 121,255.40
  4. Step 4: Simplify right side
    215,733.80x = 39,238,332,318.78
  5. Step 5: Solve for x
    x = 39,238,332,318.78/215,733.80
  6. Step 6: Final answer
    x = 181,883.10

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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.