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Finding the Fourth Proportional to 380,336.68, 570,481.98 and 99,847.72

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Solution

The fourth proportional to 380,336.68, 570,481.98 and 99,847.72 is: 149,765.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,336.68 : 570,481.98 = 99,847.72 : x
  2. Step 2: Convert to fraction form
    380,336.68/570,481.98 = 99,847.72/x
  3. Step 3: Cross multiply
    380,336.68x = 570,481.98 × 99,847.72
  4. Step 4: Simplify right side
    380,336.68x = 56,961,325,004.09
  5. Step 5: Solve for x
    x = 56,961,325,004.09/380,336.68
  6. Step 6: Final answer
    x = 149,765.53

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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.