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Finding the Fourth Proportional to 255,991.08, 383,960.68 and 69,021.48

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Solution

The fourth proportional to 255,991.08, 383,960.68 and 69,021.48 is: 103,525.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,991.08 : 383,960.68 = 69,021.48 : x
  2. Step 2: Convert to fraction form
    255,991.08/383,960.68 = 69,021.48/x
  3. Step 3: Cross multiply
    255,991.08x = 383,960.68 × 69,021.48
  4. Step 4: Simplify right side
    255,991.08x = 26,501,534,395.41
  5. Step 5: Solve for x
    x = 26,501,534,395.41/255,991.08
  6. Step 6: Final answer
    x = 103,525.23

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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.