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Finding the Fourth Proportional to 521,840.92, 782,899.80 and 166,861.48

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Solution

The fourth proportional to 521,840.92, 782,899.80 and 166,861.48 is: 250,336.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,840.92 : 782,899.80 = 166,861.48 : x
  2. Step 2: Convert to fraction form
    521,840.92/782,899.80 = 166,861.48/x
  3. Step 3: Cross multiply
    521,840.92x = 782,899.80 × 166,861.48
  4. Step 4: Simplify right side
    521,840.92x = 130,635,819,319.70
  5. Step 5: Solve for x
    x = 130,635,819,319.70/521,840.92
  6. Step 6: Final answer
    x = 250,336.48

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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.