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Finding the Fourth Proportional to 255,696.21, 383,544 and 68,707.71

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Solution

The fourth proportional to 255,696.21, 383,544 and 68,707.71 is: 103,061.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,696.21 : 383,544 = 68,707.71 : x
  2. Step 2: Convert to fraction form
    255,696.21/383,544 = 68,707.71/x
  3. Step 3: Cross multiply
    255,696.21x = 383,544 × 68,707.71
  4. Step 4: Simplify right side
    255,696.21x = 26,352,429,924.24
  5. Step 5: Solve for x
    x = 26,352,429,924.24/255,696.21
  6. Step 6: Final answer
    x = 103,061.48

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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.