Home / 331,504.20-495,944.10-287,618.40

Finding the Fourth Proportional to 331,504.20, 495,944.10 and 287,618.40

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Solution

The fourth proportional to 331,504.20, 495,944.10 and 287,618.40 is: 430,289.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,504.20 : 495,944.10 = 287,618.40 : x
  2. Step 2: Convert to fraction form
    331,504.20/495,944.10 = 287,618.40/x
  3. Step 3: Cross multiply
    331,504.20x = 495,944.10 × 287,618.40
  4. Step 4: Simplify right side
    331,504.20x = 142,642,648,531.44
  5. Step 5: Solve for x
    x = 142,642,648,531.44/331,504.20
  6. Step 6: Final answer
    x = 430,289.11

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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.