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Finding the Fourth Proportional to 322,211.58, 483,280.26 and 85,572.78

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Solution

The fourth proportional to 322,211.58, 483,280.26 and 85,572.78 is: 128,349.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,211.58 : 483,280.26 = 85,572.78 : x
  2. Step 2: Convert to fraction form
    322,211.58/483,280.26 = 85,572.78/x
  3. Step 3: Cross multiply
    322,211.58x = 483,280.26 × 85,572.78
  4. Step 4: Simplify right side
    322,211.58x = 41,355,635,367.32
  5. Step 5: Solve for x
    x = 41,355,635,367.32/322,211.58
  6. Step 6: Final answer
    x = 128,349.31

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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.