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Finding the Fourth Proportional to 492,285, 679,353.30 and 265,930.50

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Solution

The fourth proportional to 492,285, 679,353.30 and 265,930.50 is: 366,984.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,285 : 679,353.30 = 265,930.50 : x
  2. Step 2: Convert to fraction form
    492,285/679,353.30 = 265,930.50/x
  3. Step 3: Cross multiply
    492,285x = 679,353.30 × 265,930.50
  4. Step 4: Simplify right side
    492,285x = 180,660,762,745.65
  5. Step 5: Solve for x
    x = 180,660,762,745.65/492,285
  6. Step 6: Final answer
    x = 366,984.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.