Home / 330,023.55-494,148.39-209,427.58

Finding the Fourth Proportional to 330,023.55, 494,148.39 and 209,427.58

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Solution

The fourth proportional to 330,023.55, 494,148.39 and 209,427.58 is: 313,578.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,023.55 : 494,148.39 = 209,427.58 : x
  2. Step 2: Convert to fraction form
    330,023.55/494,148.39 = 209,427.58/x
  3. Step 3: Cross multiply
    330,023.55x = 494,148.39 × 209,427.58
  4. Step 4: Simplify right side
    330,023.55x = 103,488,301,478.60
  5. Step 5: Solve for x
    x = 103,488,301,478.60/330,023.55
  6. Step 6: Final answer
    x = 313,578.54

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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.