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Finding the Fourth Proportional to 255,625.04, 383,440 and 68,636.54

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Solution

The fourth proportional to 255,625.04, 383,440 and 68,636.54 is: 102,955.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,625.04 : 383,440 = 68,636.54 : x
  2. Step 2: Convert to fraction form
    255,625.04/383,440 = 68,636.54/x
  3. Step 3: Cross multiply
    255,625.04x = 383,440 × 68,636.54
  4. Step 4: Simplify right side
    255,625.04x = 26,317,994,897.60
  5. Step 5: Solve for x
    x = 26,317,994,897.60/255,625.04
  6. Step 6: Final answer
    x = 102,955.47

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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.