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Finding the Fourth Proportional to 419,630.68, 579,090.42 and 228,644.07

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Solution

The fourth proportional to 419,630.68, 579,090.42 and 228,644.07 is: 315,528.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,630.68 : 579,090.42 = 228,644.07 : x
  2. Step 2: Convert to fraction form
    419,630.68/579,090.42 = 228,644.07/x
  3. Step 3: Cross multiply
    419,630.68x = 579,090.42 × 228,644.07
  4. Step 4: Simplify right side
    419,630.68x = 132,405,588,221.67
  5. Step 5: Solve for x
    x = 132,405,588,221.67/419,630.68
  6. Step 6: Final answer
    x = 315,528.86

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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.