Home / 287,193.42-396,323.58-158,129.21

Finding the Fourth Proportional to 287,193.42, 396,323.58 and 158,129.21

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Solution

The fourth proportional to 287,193.42, 396,323.58 and 158,129.21 is: 218,216.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,193.42 : 396,323.58 = 158,129.21 : x
  2. Step 2: Convert to fraction form
    287,193.42/396,323.58 = 158,129.21/x
  3. Step 3: Cross multiply
    287,193.42x = 396,323.58 × 158,129.21
  4. Step 4: Simplify right side
    287,193.42x = 62,670,336,193.57
  5. Step 5: Solve for x
    x = 62,670,336,193.57/287,193.42
  6. Step 6: Final answer
    x = 218,216.47

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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.