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Finding the Fourth Proportional to 381,450.60, 526,403.88 and 211,684.86

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Solution

The fourth proportional to 381,450.60, 526,403.88 and 211,684.86 is: 292,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,450.60 : 526,403.88 = 211,684.86 : x
  2. Step 2: Convert to fraction form
    381,450.60/526,403.88 = 211,684.86/x
  3. Step 3: Cross multiply
    381,450.60x = 526,403.88 × 211,684.86
  4. Step 4: Simplify right side
    381,450.60x = 111,431,731,641.26
  5. Step 5: Solve for x
    x = 111,431,731,641.26/381,450.60
  6. Step 6: Final answer
    x = 292,126.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.