Home / 306,040.61-421,890.92-213,873.75

Finding the Fourth Proportional to 306,040.61, 421,890.92 and 213,873.75

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Solution

The fourth proportional to 306,040.61, 421,890.92 and 213,873.75 is: 294,834.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,040.61 : 421,890.92 = 213,873.75 : x
  2. Step 2: Convert to fraction form
    306,040.61/421,890.92 = 213,873.75/x
  3. Step 3: Cross multiply
    306,040.61x = 421,890.92 × 213,873.75
  4. Step 4: Simplify right side
    306,040.61x = 90,231,392,081.98
  5. Step 5: Solve for x
    x = 90,231,392,081.98/306,040.61
  6. Step 6: Final answer
    x = 294,834.71

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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.