Home / 305,846.34-421,921.47-215,252.58

Finding the Fourth Proportional to 305,846.34, 421,921.47 and 215,252.58

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Solution

The fourth proportional to 305,846.34, 421,921.47 and 215,252.58 is: 296,945.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,846.34 : 421,921.47 = 215,252.58 : x
  2. Step 2: Convert to fraction form
    305,846.34/421,921.47 = 215,252.58/x
  3. Step 3: Cross multiply
    305,846.34x = 421,921.47 × 215,252.58
  4. Step 4: Simplify right side
    305,846.34x = 90,819,684,974.89
  5. Step 5: Solve for x
    x = 90,819,684,974.89/305,846.34
  6. Step 6: Final answer
    x = 296,945.47

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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.