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Finding the Fourth Proportional to 419,661.76, 579,133 and 228,674.92

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Solution

The fourth proportional to 419,661.76, 579,133 and 228,674.92 is: 315,571.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,661.76 : 579,133 = 228,674.92 : x
  2. Step 2: Convert to fraction form
    419,661.76/579,133 = 228,674.92/x
  3. Step 3: Cross multiply
    419,661.76x = 579,133 × 228,674.92
  4. Step 4: Simplify right side
    419,661.76x = 132,433,192,444.36
  5. Step 5: Solve for x
    x = 132,433,192,444.36/419,661.76
  6. Step 6: Final answer
    x = 315,571.26

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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.