Home / 287,640.51-396,933.07-166,786.89

Finding the Fourth Proportional to 287,640.51, 396,933.07 and 166,786.89

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Solution

The fourth proportional to 287,640.51, 396,933.07 and 166,786.89 is: 230,159.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,640.51 : 396,933.07 = 166,786.89 : x
  2. Step 2: Convert to fraction form
    287,640.51/396,933.07 = 166,786.89/x
  3. Step 3: Cross multiply
    287,640.51x = 396,933.07 × 166,786.89
  4. Step 4: Simplify right side
    287,640.51x = 66,203,232,283.45
  5. Step 5: Solve for x
    x = 66,203,232,283.45/287,640.51
  6. Step 6: Final answer
    x = 230,159.63

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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.