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Finding the Fourth Proportional to 394,292.80, 590,661.60 and 236,051.20

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Solution

The fourth proportional to 394,292.80, 590,661.60 and 236,051.20 is: 353,611.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,292.80 : 590,661.60 = 236,051.20 : x
  2. Step 2: Convert to fraction form
    394,292.80/590,661.60 = 236,051.20/x
  3. Step 3: Cross multiply
    394,292.80x = 590,661.60 × 236,051.20
  4. Step 4: Simplify right side
    394,292.80x = 139,426,379,473.92
  5. Step 5: Solve for x
    x = 139,426,379,473.92/394,292.80
  6. Step 6: Final answer
    x = 353,611.27

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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.