Home / 330,148.80-455,587.20-194,198.40

Finding the Fourth Proportional to 330,148.80, 455,587.20 and 194,198.40

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Solution

The fourth proportional to 330,148.80, 455,587.20 and 194,198.40 is: 267,983.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,148.80 : 455,587.20 = 194,198.40 : x
  2. Step 2: Convert to fraction form
    330,148.80/455,587.20 = 194,198.40/x
  3. Step 3: Cross multiply
    330,148.80x = 455,587.20 × 194,198.40
  4. Step 4: Simplify right side
    330,148.80x = 88,474,305,300.48
  5. Step 5: Solve for x
    x = 88,474,305,300.48/330,148.80
  6. Step 6: Final answer
    x = 267,983.12

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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.