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Finding the Fourth Proportional to 289,778.40, 434,883.60 and 149,464.80

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Solution

The fourth proportional to 289,778.40, 434,883.60 and 149,464.80 is: 224,308.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,778.40 : 434,883.60 = 149,464.80 : x
  2. Step 2: Convert to fraction form
    289,778.40/434,883.60 = 149,464.80/x
  3. Step 3: Cross multiply
    289,778.40x = 434,883.60 × 149,464.80
  4. Step 4: Simplify right side
    289,778.40x = 64,999,790,297.28
  5. Step 5: Solve for x
    x = 64,999,790,297.28/289,778.40
  6. Step 6: Final answer
    x = 224,308.61

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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.