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Finding the Fourth Proportional to 263,266.65, 394,899.98 and 156,978.45

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Solution

The fourth proportional to 263,266.65, 394,899.98 and 156,978.45 is: 235,467.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,266.65 : 394,899.98 = 156,978.45 : x
  2. Step 2: Convert to fraction form
    263,266.65/394,899.98 = 156,978.45/x
  3. Step 3: Cross multiply
    263,266.65x = 394,899.98 × 156,978.45
  4. Step 4: Simplify right side
    263,266.65x = 61,990,785,980.54
  5. Step 5: Solve for x
    x = 61,990,785,980.54/263,266.65
  6. Step 6: Final answer
    x = 235,467.68

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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.