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Finding the Fourth Proportional to 298,052.20, 447,078.30 and 120,467.80

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Solution

The fourth proportional to 298,052.20, 447,078.30 and 120,467.80 is: 180,701.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,052.20 : 447,078.30 = 120,467.80 : x
  2. Step 2: Convert to fraction form
    298,052.20/447,078.30 = 120,467.80/x
  3. Step 3: Cross multiply
    298,052.20x = 447,078.30 × 120,467.80
  4. Step 4: Simplify right side
    298,052.20x = 53,858,539,228.74
  5. Step 5: Solve for x
    x = 53,858,539,228.74/298,052.20
  6. Step 6: Final answer
    x = 180,701.70

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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.