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Finding the Fourth Proportional to 214,372.99, 321,512.55 and 87,888.77

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Solution

The fourth proportional to 214,372.99, 321,512.55 and 87,888.77 is: 131,813.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,372.99 : 321,512.55 = 87,888.77 : x
  2. Step 2: Convert to fraction form
    214,372.99/321,512.55 = 87,888.77/x
  3. Step 3: Cross multiply
    214,372.99x = 321,512.55 × 87,888.77
  4. Step 4: Simplify right side
    214,372.99x = 28,257,342,559.06
  5. Step 5: Solve for x
    x = 28,257,342,559.06/214,372.99
  6. Step 6: Final answer
    x = 131,813.91

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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.