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Finding the Fourth Proportional to 219,054.70, 298,240.35 and 218,379.97

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Solution

The fourth proportional to 219,054.70, 298,240.35 and 218,379.97 is: 297,321.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,054.70 : 298,240.35 = 218,379.97 : x
  2. Step 2: Convert to fraction form
    219,054.70/298,240.35 = 218,379.97/x
  3. Step 3: Cross multiply
    219,054.70x = 298,240.35 × 218,379.97
  4. Step 4: Simplify right side
    219,054.70x = 65,129,718,685.79
  5. Step 5: Solve for x
    x = 65,129,718,685.79/219,054.70
  6. Step 6: Final answer
    x = 297,321.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.