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Finding the Fourth Proportional to 255,362.21, 352,396.54 and 140,638.67

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Solution

The fourth proportional to 255,362.21, 352,396.54 and 140,638.67 is: 194,079.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,362.21 : 352,396.54 = 140,638.67 : x
  2. Step 2: Convert to fraction form
    255,362.21/352,396.54 = 140,638.67/x
  3. Step 3: Cross multiply
    255,362.21x = 352,396.54 × 140,638.67
  4. Step 4: Simplify right side
    255,362.21x = 49,560,580,698.20
  5. Step 5: Solve for x
    x = 49,560,580,698.20/255,362.21
  6. Step 6: Final answer
    x = 194,079.54

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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.