Home / 287,400.36-396,475.14-223,299.48

Finding the Fourth Proportional to 287,400.36, 396,475.14 and 223,299.48

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Solution

The fourth proportional to 287,400.36, 396,475.14 and 223,299.48 is: 308,046.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,400.36 : 396,475.14 = 223,299.48 : x
  2. Step 2: Convert to fraction form
    287,400.36/396,475.14 = 223,299.48/x
  3. Step 3: Cross multiply
    287,400.36x = 396,475.14 × 223,299.48
  4. Step 4: Simplify right side
    287,400.36x = 88,532,692,594.93
  5. Step 5: Solve for x
    x = 88,532,692,594.93/287,400.36
  6. Step 6: Final answer
    x = 308,046.56

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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.