Home / 287,398.11-396,472.04-223,297.23

Finding the Fourth Proportional to 287,398.11, 396,472.04 and 223,297.23

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Solution

The fourth proportional to 287,398.11, 396,472.04 and 223,297.23 is: 308,043.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,398.11 : 396,472.04 = 223,297.23 : x
  2. Step 2: Convert to fraction form
    287,398.11/396,472.04 = 223,297.23/x
  3. Step 3: Cross multiply
    287,398.11x = 396,472.04 × 223,297.23
  4. Step 4: Simplify right side
    287,398.11x = 88,531,107,187.96
  5. Step 5: Solve for x
    x = 88,531,107,187.96/287,398.11
  6. Step 6: Final answer
    x = 308,043.46

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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.