Home / 289,438.44-399,440.10-162,106.60

Finding the Fourth Proportional to 289,438.44, 399,440.10 and 162,106.60

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Solution

The fourth proportional to 289,438.44, 399,440.10 and 162,106.60 is: 223,715.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,438.44 : 399,440.10 = 162,106.60 : x
  2. Step 2: Convert to fraction form
    289,438.44/399,440.10 = 162,106.60/x
  3. Step 3: Cross multiply
    289,438.44x = 399,440.10 × 162,106.60
  4. Step 4: Simplify right side
    289,438.44x = 64,751,876,514.66
  5. Step 5: Solve for x
    x = 64,751,876,514.66/289,438.44
  6. Step 6: Final answer
    x = 223,715.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.