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Finding the Fourth Proportional to 405,168.04, 559,129.70 and 223,879.72

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Solution

The fourth proportional to 405,168.04, 559,129.70 and 223,879.72 is: 308,952.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,168.04 : 559,129.70 = 223,879.72 : x
  2. Step 2: Convert to fraction form
    405,168.04/559,129.70 = 223,879.72/x
  3. Step 3: Cross multiply
    405,168.04x = 559,129.70 × 223,879.72
  4. Step 4: Simplify right side
    405,168.04x = 125,177,800,679.68
  5. Step 5: Solve for x
    x = 125,177,800,679.68/405,168.04
  6. Step 6: Final answer
    x = 308,952.80

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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.