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Finding the Fourth Proportional to 421,047.78, 581,046.06 and 227,455.54

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Solution

The fourth proportional to 421,047.78, 581,046.06 and 227,455.54 is: 313,888.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,047.78 : 581,046.06 = 227,455.54 : x
  2. Step 2: Convert to fraction form
    421,047.78/581,046.06 = 227,455.54/x
  3. Step 3: Cross multiply
    421,047.78x = 581,046.06 × 227,455.54
  4. Step 4: Simplify right side
    421,047.78x = 132,162,145,342.17
  5. Step 5: Solve for x
    x = 132,162,145,342.17/421,047.78
  6. Step 6: Final answer
    x = 313,888.71

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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.