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Finding the Fourth Proportional to 330,200.55, 495,300.83 and 274,152.60

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Solution

The fourth proportional to 330,200.55, 495,300.83 and 274,152.60 is: 411,228.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,200.55 : 495,300.83 = 274,152.60 : x
  2. Step 2: Convert to fraction form
    330,200.55/495,300.83 = 274,152.60/x
  3. Step 3: Cross multiply
    330,200.55x = 495,300.83 × 274,152.60
  4. Step 4: Simplify right side
    330,200.55x = 135,788,008,955.90
  5. Step 5: Solve for x
    x = 135,788,008,955.90/330,200.55
  6. Step 6: Final answer
    x = 411,228.90

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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.