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Finding the Fourth Proportional to 287,400.55, 396,612.86 and 166,611.86

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Solution

The fourth proportional to 287,400.55, 396,612.86 and 166,611.86 is: 229,924.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,400.55 : 396,612.86 = 166,611.86 : x
  2. Step 2: Convert to fraction form
    287,400.55/396,612.86 = 166,611.86/x
  3. Step 3: Cross multiply
    287,400.55x = 396,612.86 × 166,611.86
  4. Step 4: Simplify right side
    287,400.55x = 66,080,404,321.46
  5. Step 5: Solve for x
    x = 66,080,404,321.46/287,400.55
  6. Step 6: Final answer
    x = 229,924.42

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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.