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Finding the Fourth Proportional to 419,957.88, 579,544.62 and 228,974.46

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Solution

The fourth proportional to 419,957.88, 579,544.62 and 228,974.46 is: 315,986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,957.88 : 579,544.62 = 228,974.46 : x
  2. Step 2: Convert to fraction form
    419,957.88/579,544.62 = 228,974.46/x
  3. Step 3: Cross multiply
    419,957.88x = 579,544.62 × 228,974.46
  4. Step 4: Simplify right side
    419,957.88x = 132,700,916,410.41
  5. Step 5: Solve for x
    x = 132,700,916,410.41/419,957.88
  6. Step 6: Final answer
    x = 315,986.25

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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.