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Finding the Fourth Proportional to 492,956.60, 739,143.30 and 256,760.60

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Solution

The fourth proportional to 492,956.60, 739,143.30 and 256,760.60 is: 384,989.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,956.60 : 739,143.30 = 256,760.60 : x
  2. Step 2: Convert to fraction form
    492,956.60/739,143.30 = 256,760.60/x
  3. Step 3: Cross multiply
    492,956.60x = 739,143.30 × 256,760.60
  4. Step 4: Simplify right side
    492,956.60x = 189,782,877,193.98
  5. Step 5: Solve for x
    x = 189,782,877,193.98/492,956.60
  6. Step 6: Final answer
    x = 384,989.02

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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.