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Finding the Fourth Proportional to 548,638.38, 757,122.08 and 306,925

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Solution

The fourth proportional to 548,638.38, 757,122.08 and 306,925 is: 423,557.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,638.38 : 757,122.08 = 306,925 : x
  2. Step 2: Convert to fraction form
    548,638.38/757,122.08 = 306,925/x
  3. Step 3: Cross multiply
    548,638.38x = 757,122.08 × 306,925
  4. Step 4: Simplify right side
    548,638.38x = 232,379,694,404
  5. Step 5: Solve for x
    x = 232,379,694,404/548,638.38
  6. Step 6: Final answer
    x = 423,557.12

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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.