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Finding the Fourth Proportional to 215,622.60, 323,433.90 and 194,627.40

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Solution

The fourth proportional to 215,622.60, 323,433.90 and 194,627.40 is: 291,941.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,622.60 : 323,433.90 = 194,627.40 : x
  2. Step 2: Convert to fraction form
    215,622.60/323,433.90 = 194,627.40/x
  3. Step 3: Cross multiply
    215,622.60x = 323,433.90 × 194,627.40
  4. Step 4: Simplify right side
    215,622.60x = 62,949,099,028.86
  5. Step 5: Solve for x
    x = 62,949,099,028.86/215,622.60
  6. Step 6: Final answer
    x = 291,941.10

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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.