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Finding the Fourth Proportional to 470,782.62, 649,672.31 and 255,928.09

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Solution

The fourth proportional to 470,782.62, 649,672.31 and 255,928.09 is: 353,176.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,782.62 : 649,672.31 = 255,928.09 : x
  2. Step 2: Convert to fraction form
    470,782.62/649,672.31 = 255,928.09/x
  3. Step 3: Cross multiply
    470,782.62x = 649,672.31 × 255,928.09
  4. Step 4: Simplify right side
    470,782.62x = 166,269,393,424.19
  5. Step 5: Solve for x
    x = 166,269,393,424.19/470,782.62
  6. Step 6: Final answer
    x = 353,176.58

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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.