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Finding the Fourth Proportional to 298,039.80, 447,059.70 and 265,380.60

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Solution

The fourth proportional to 298,039.80, 447,059.70 and 265,380.60 is: 398,070.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,039.80 : 447,059.70 = 265,380.60 : x
  2. Step 2: Convert to fraction form
    298,039.80/447,059.70 = 265,380.60/x
  3. Step 3: Cross multiply
    298,039.80x = 447,059.70 × 265,380.60
  4. Step 4: Simplify right side
    298,039.80x = 118,640,971,421.82
  5. Step 5: Solve for x
    x = 118,640,971,421.82/298,039.80
  6. Step 6: Final answer
    x = 398,070.90

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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.