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Finding the Fourth Proportional to 255,081.45, 382,458.06 and 121,958.76

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Solution

The fourth proportional to 255,081.45, 382,458.06 and 121,958.76 is: 182,859.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,081.45 : 382,458.06 = 121,958.76 : x
  2. Step 2: Convert to fraction form
    255,081.45/382,458.06 = 121,958.76/x
  3. Step 3: Cross multiply
    255,081.45x = 382,458.06 × 121,958.76
  4. Step 4: Simplify right side
    255,081.45x = 46,644,110,749.61
  5. Step 5: Solve for x
    x = 46,644,110,749.61/255,081.45
  6. Step 6: Final answer
    x = 182,859.67

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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.