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Finding the Fourth Proportional to 255,982.37, 383,929.80 and 68,950.13

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Solution

The fourth proportional to 255,982.37, 383,929.80 and 68,950.13 is: 103,413.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,982.37 : 383,929.80 = 68,950.13 : x
  2. Step 2: Convert to fraction form
    255,982.37/383,929.80 = 68,950.13/x
  3. Step 3: Cross multiply
    255,982.37x = 383,929.80 × 68,950.13
  4. Step 4: Simplify right side
    255,982.37x = 26,472,007,701.23
  5. Step 5: Solve for x
    x = 26,472,007,701.23/255,982.37
  6. Step 6: Final answer
    x = 103,413.40

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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.