Home / 397,121.54-548,031.92-215,833.46

Finding the Fourth Proportional to 397,121.54, 548,031.92 and 215,833.46

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Solution

The fourth proportional to 397,121.54, 548,031.92 and 215,833.46 is: 297,852.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,121.54 : 548,031.92 = 215,833.46 : x
  2. Step 2: Convert to fraction form
    397,121.54/548,031.92 = 215,833.46/x
  3. Step 3: Cross multiply
    397,121.54x = 548,031.92 × 215,833.46
  4. Step 4: Simplify right side
    397,121.54x = 118,283,621,664.72
  5. Step 5: Solve for x
    x = 118,283,621,664.72/397,121.54
  6. Step 6: Final answer
    x = 297,852.45

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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.