Home / 287,407.27-396,622.15-166,618.57

Finding the Fourth Proportional to 287,407.27, 396,622.15 and 166,618.57

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Solution

The fourth proportional to 287,407.27, 396,622.15 and 166,618.57 is: 229,933.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,407.27 : 396,622.15 = 166,618.57 : x
  2. Step 2: Convert to fraction form
    287,407.27/396,622.15 = 166,618.57/x
  3. Step 3: Cross multiply
    287,407.27x = 396,622.15 × 166,618.57
  4. Step 4: Simplify right side
    287,407.27x = 66,084,615,736.12
  5. Step 5: Solve for x
    x = 66,084,615,736.12/287,407.27
  6. Step 6: Final answer
    x = 229,933.69

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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.