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Finding the Fourth Proportional to 215,328.26, 322,992.51 and 96,861.21

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Solution

The fourth proportional to 215,328.26, 322,992.51 and 96,861.21 is: 145,291.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,328.26 : 322,992.51 = 96,861.21 : x
  2. Step 2: Convert to fraction form
    215,328.26/322,992.51 = 96,861.21/x
  3. Step 3: Cross multiply
    215,328.26x = 322,992.51 × 96,861.21
  4. Step 4: Simplify right side
    215,328.26x = 31,285,445,339.54
  5. Step 5: Solve for x
    x = 31,285,445,339.54/215,328.26
  6. Step 6: Final answer
    x = 145,291.87

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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.