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Finding the Fourth Proportional to 215,840.40, 323,760.60 and 199,251.60

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Solution

The fourth proportional to 215,840.40, 323,760.60 and 199,251.60 is: 298,877.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,840.40 : 323,760.60 = 199,251.60 : x
  2. Step 2: Convert to fraction form
    215,840.40/323,760.60 = 199,251.60/x
  3. Step 3: Cross multiply
    215,840.40x = 323,760.60 × 199,251.60
  4. Step 4: Simplify right side
    215,840.40x = 64,509,817,566.96
  5. Step 5: Solve for x
    x = 64,509,817,566.96/215,840.40
  6. Step 6: Final answer
    x = 298,877.40

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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.