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Finding the Fourth Proportional to 298,509.44, 445,580.20 and 263,081.12

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Solution

The fourth proportional to 298,509.44, 445,580.20 and 263,081.12 is: 392,696.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,509.44 : 445,580.20 = 263,081.12 : x
  2. Step 2: Convert to fraction form
    298,509.44/445,580.20 = 263,081.12/x
  3. Step 3: Cross multiply
    298,509.44x = 445,580.20 × 263,081.12
  4. Step 4: Simplify right side
    298,509.44x = 117,223,738,065.82
  5. Step 5: Solve for x
    x = 117,223,738,065.82/298,509.44
  6. Step 6: Final answer
    x = 392,696.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.