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Finding the Fourth Proportional to 397,510.06, 548,661.32 and 225,528.69

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Solution

The fourth proportional to 397,510.06, 548,661.32 and 225,528.69 is: 311,284.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,510.06 : 548,661.32 = 225,528.69 : x
  2. Step 2: Convert to fraction form
    397,510.06/548,661.32 = 225,528.69/x
  3. Step 3: Cross multiply
    397,510.06x = 548,661.32 × 225,528.69
  4. Step 4: Simplify right side
    397,510.06x = 123,738,867,625.63
  5. Step 5: Solve for x
    x = 123,738,867,625.63/397,510.06
  6. Step 6: Final answer
    x = 311,284.87

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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.