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Finding the Fourth Proportional to 215,676.60, 323,514.90 and 203,429.40

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Solution

The fourth proportional to 215,676.60, 323,514.90 and 203,429.40 is: 305,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,676.60 : 323,514.90 = 203,429.40 : x
  2. Step 2: Convert to fraction form
    215,676.60/323,514.90 = 203,429.40/x
  3. Step 3: Cross multiply
    215,676.60x = 323,514.90 × 203,429.40
  4. Step 4: Simplify right side
    215,676.60x = 65,812,441,998.06
  5. Step 5: Solve for x
    x = 65,812,441,998.06/215,676.60
  6. Step 6: Final answer
    x = 305,144.10

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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.