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Finding the Fourth Proportional to 330,640.42, 456,367.46 and 203,429.92

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Solution

The fourth proportional to 330,640.42, 456,367.46 and 203,429.92 is: 280,784.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,640.42 : 456,367.46 = 203,429.92 : x
  2. Step 2: Convert to fraction form
    330,640.42/456,367.46 = 203,429.92/x
  3. Step 3: Cross multiply
    330,640.42x = 456,367.46 × 203,429.92
  4. Step 4: Simplify right side
    330,640.42x = 92,838,795,878.40
  5. Step 5: Solve for x
    x = 92,838,795,878.40/330,640.42
  6. Step 6: Final answer
    x = 280,784.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.