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Finding the Fourth Proportional to 331,253.80, 496,880.70 and 256,604.20

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Solution

The fourth proportional to 331,253.80, 496,880.70 and 256,604.20 is: 384,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,253.80 : 496,880.70 = 256,604.20 : x
  2. Step 2: Convert to fraction form
    331,253.80/496,880.70 = 256,604.20/x
  3. Step 3: Cross multiply
    331,253.80x = 496,880.70 × 256,604.20
  4. Step 4: Simplify right side
    331,253.80x = 127,501,674,518.94
  5. Step 5: Solve for x
    x = 127,501,674,518.94/331,253.80
  6. Step 6: Final answer
    x = 384,906.30

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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.