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Finding the Fourth Proportional to 215,830.60, 323,745.90 and 194,835.40

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Solution

The fourth proportional to 215,830.60, 323,745.90 and 194,835.40 is: 292,253.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,830.60 : 323,745.90 = 194,835.40 : x
  2. Step 2: Convert to fraction form
    215,830.60/323,745.90 = 194,835.40/x
  3. Step 3: Cross multiply
    215,830.60x = 323,745.90 × 194,835.40
  4. Step 4: Simplify right side
    215,830.60x = 63,077,161,924.86
  5. Step 5: Solve for x
    x = 63,077,161,924.86/215,830.60
  6. Step 6: Final answer
    x = 292,253.10

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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.