Home / 304,942.78-420,546.90-197,400.70

Finding the Fourth Proportional to 304,942.78, 420,546.90 and 197,400.70

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Solution

The fourth proportional to 304,942.78, 420,546.90 and 197,400.70 is: 272,235.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,942.78 : 420,546.90 = 197,400.70 : x
  2. Step 2: Convert to fraction form
    304,942.78/420,546.90 = 197,400.70/x
  3. Step 3: Cross multiply
    304,942.78x = 420,546.90 × 197,400.70
  4. Step 4: Simplify right side
    304,942.78x = 83,016,252,442.83
  5. Step 5: Solve for x
    x = 83,016,252,442.83/304,942.78
  6. Step 6: Final answer
    x = 272,235.51

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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.