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Finding the Fourth Proportional to 262,830.80, 394,246.20 and 65,838.80

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Solution

The fourth proportional to 262,830.80, 394,246.20 and 65,838.80 is: 98,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,830.80 : 394,246.20 = 65,838.80 : x
  2. Step 2: Convert to fraction form
    262,830.80/394,246.20 = 65,838.80/x
  3. Step 3: Cross multiply
    262,830.80x = 394,246.20 × 65,838.80
  4. Step 4: Simplify right side
    262,830.80x = 25,956,696,712.56
  5. Step 5: Solve for x
    x = 25,956,696,712.56/262,830.80
  6. Step 6: Final answer
    x = 98,758.20

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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.