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Finding the Fourth Proportional to 330,000.40, 495,000.60 and 290,634.40

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Solution

The fourth proportional to 330,000.40, 495,000.60 and 290,634.40 is: 435,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,000.40 : 495,000.60 = 290,634.40 : x
  2. Step 2: Convert to fraction form
    330,000.40/495,000.60 = 290,634.40/x
  3. Step 3: Cross multiply
    330,000.40x = 495,000.60 × 290,634.40
  4. Step 4: Simplify right side
    330,000.40x = 143,864,202,380.64
  5. Step 5: Solve for x
    x = 143,864,202,380.64/330,000.40
  6. Step 6: Final answer
    x = 435,951.60

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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.