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Finding the Fourth Proportional to 302,578.80, 453,868.20 and 269,919.60

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Solution

The fourth proportional to 302,578.80, 453,868.20 and 269,919.60 is: 404,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,578.80 : 453,868.20 = 269,919.60 : x
  2. Step 2: Convert to fraction form
    302,578.80/453,868.20 = 269,919.60/x
  3. Step 3: Cross multiply
    302,578.80x = 453,868.20 × 269,919.60
  4. Step 4: Simplify right side
    302,578.80x = 122,507,922,996.72
  5. Step 5: Solve for x
    x = 122,507,922,996.72/302,578.80
  6. Step 6: Final answer
    x = 404,879.40

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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.