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Finding the Fourth Proportional to 287,185.47, 396,438.48 and 204,452.79

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Solution

The fourth proportional to 287,185.47, 396,438.48 and 204,452.79 is: 282,232.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,185.47 : 396,438.48 = 204,452.79 : x
  2. Step 2: Convert to fraction form
    287,185.47/396,438.48 = 204,452.79/x
  3. Step 3: Cross multiply
    287,185.47x = 396,438.48 × 204,452.79
  4. Step 4: Simplify right side
    287,185.47x = 81,052,953,299.36
  5. Step 5: Solve for x
    x = 81,052,953,299.36/287,185.47
  6. Step 6: Final answer
    x = 282,232.08

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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.