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Finding the Fourth Proportional to 263,326.80, 394,990.20 and 210,838.80

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Solution

The fourth proportional to 263,326.80, 394,990.20 and 210,838.80 is: 316,258.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,326.80 : 394,990.20 = 210,838.80 : x
  2. Step 2: Convert to fraction form
    263,326.80/394,990.20 = 210,838.80/x
  3. Step 3: Cross multiply
    263,326.80x = 394,990.20 × 210,838.80
  4. Step 4: Simplify right side
    263,326.80x = 83,279,259,779.76
  5. Step 5: Solve for x
    x = 83,279,259,779.76/263,326.80
  6. Step 6: Final answer
    x = 316,258.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.