Home / 287,400.05-396,612.17-166,611.35

Finding the Fourth Proportional to 287,400.05, 396,612.17 and 166,611.35

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Solution

The fourth proportional to 287,400.05, 396,612.17 and 166,611.35 is: 229,923.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,400.05 : 396,612.17 = 166,611.35 : x
  2. Step 2: Convert to fraction form
    287,400.05/396,612.17 = 166,611.35/x
  3. Step 3: Cross multiply
    287,400.05x = 396,612.17 × 166,611.35
  4. Step 4: Simplify right side
    287,400.05x = 66,080,089,853.40
  5. Step 5: Solve for x
    x = 66,080,089,853.40/287,400.05
  6. Step 6: Final answer
    x = 229,923.73

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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.