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Finding the Fourth Proportional to 479,393.37, 661,802.31 and 298,163.77

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Solution

The fourth proportional to 479,393.37, 661,802.31 and 298,163.77 is: 411,614.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,393.37 : 661,802.31 = 298,163.77 : x
  2. Step 2: Convert to fraction form
    479,393.37/661,802.31 = 298,163.77/x
  3. Step 3: Cross multiply
    479,393.37x = 661,802.31 × 298,163.77
  4. Step 4: Simplify right side
    479,393.37x = 197,325,470,089.80
  5. Step 5: Solve for x
    x = 197,325,470,089.80/479,393.37
  6. Step 6: Final answer
    x = 411,614.93

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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.