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Finding the Fourth Proportional to 492,749.80, 738,951.90 and 256,013.80

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Solution

The fourth proportional to 492,749.80, 738,951.90 and 256,013.80 is: 383,930.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,749.80 : 738,951.90 = 256,013.80 : x
  2. Step 2: Convert to fraction form
    492,749.80/738,951.90 = 256,013.80/x
  3. Step 3: Cross multiply
    492,749.80x = 738,951.90 × 256,013.80
  4. Step 4: Simplify right side
    492,749.80x = 189,181,883,936.22
  5. Step 5: Solve for x
    x = 189,181,883,936.22/492,749.80
  6. Step 6: Final answer
    x = 383,930.92

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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.