Home / 287,321.76-396,504-166,533.12

Finding the Fourth Proportional to 287,321.76, 396,504 and 166,533.12

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Solution

The fourth proportional to 287,321.76, 396,504 and 166,533.12 is: 229,815.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,321.76 : 396,504 = 166,533.12 : x
  2. Step 2: Convert to fraction form
    287,321.76/396,504 = 166,533.12/x
  3. Step 3: Cross multiply
    287,321.76x = 396,504 × 166,533.12
  4. Step 4: Simplify right side
    287,321.76x = 66,031,048,212.48
  5. Step 5: Solve for x
    x = 66,031,048,212.48/287,321.76
  6. Step 6: Final answer
    x = 229,815.69

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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.