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Finding the Fourth Proportional to 215,832.60, 323,748.90 and 203,585.40

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Solution

The fourth proportional to 215,832.60, 323,748.90 and 203,585.40 is: 305,378.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,832.60 : 323,748.90 = 203,585.40 : x
  2. Step 2: Convert to fraction form
    215,832.60/323,748.90 = 203,585.40/x
  3. Step 3: Cross multiply
    215,832.60x = 323,748.90 × 203,585.40
  4. Step 4: Simplify right side
    215,832.60x = 65,910,549,306.06
  5. Step 5: Solve for x
    x = 65,910,549,306.06/215,832.60
  6. Step 6: Final answer
    x = 305,378.10

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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.