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Finding the Fourth Proportional to 383,018.75, 528,569.52 and 213,256.52

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Solution

The fourth proportional to 383,018.75, 528,569.52 and 213,256.52 is: 294,296.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,018.75 : 528,569.52 = 213,256.52 : x
  2. Step 2: Convert to fraction form
    383,018.75/528,569.52 = 213,256.52/x
  3. Step 3: Cross multiply
    383,018.75x = 528,569.52 × 213,256.52
  4. Step 4: Simplify right side
    383,018.75x = 112,720,896,413.27
  5. Step 5: Solve for x
    x = 112,720,896,413.27/383,018.75
  6. Step 6: Final answer
    x = 294,296.03

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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.