Home / 221,438.80-331,283.40-192,181.60

Finding the Fourth Proportional to 221,438.80, 331,283.40 and 192,181.60

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Solution

The fourth proportional to 221,438.80, 331,283.40 and 192,181.60 is: 287,513.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,438.80 : 331,283.40 = 192,181.60 : x
  2. Step 2: Convert to fraction form
    221,438.80/331,283.40 = 192,181.60/x
  3. Step 3: Cross multiply
    221,438.80x = 331,283.40 × 192,181.60
  4. Step 4: Simplify right side
    221,438.80x = 63,666,573,865.44
  5. Step 5: Solve for x
    x = 63,666,573,865.44/221,438.80
  6. Step 6: Final answer
    x = 287,513.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.