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Finding the Fourth Proportional to 419,925.43, 579,506.13 and 228,940.12

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Solution

The fourth proportional to 419,925.43, 579,506.13 and 228,940.12 is: 315,942.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,925.43 : 579,506.13 = 228,940.12 : x
  2. Step 2: Convert to fraction form
    419,925.43/579,506.13 = 228,940.12/x
  3. Step 3: Cross multiply
    419,925.43x = 579,506.13 × 228,940.12
  4. Step 4: Simplify right side
    419,925.43x = 132,672,202,942.94
  5. Step 5: Solve for x
    x = 132,672,202,942.94/419,925.43
  6. Step 6: Final answer
    x = 315,942.29

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1.5x scale

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.