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Finding the Fourth Proportional to 397,778.51, 548,838.69 and 234,441.51

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Solution

The fourth proportional to 397,778.51, 548,838.69 and 234,441.51 is: 323,472.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,778.51 : 548,838.69 = 234,441.51 : x
  2. Step 2: Convert to fraction form
    397,778.51/548,838.69 = 234,441.51/x
  3. Step 3: Cross multiply
    397,778.51x = 548,838.69 × 234,441.51
  4. Step 4: Simplify right side
    397,778.51x = 128,670,568,292.72
  5. Step 5: Solve for x
    x = 128,670,568,292.72/397,778.51
  6. Step 6: Final answer
    x = 323,472.90

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1.5x scale

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.