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Finding the Fourth Proportional to 268,503.09, 402,745.19 and 68,825.13

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Solution

The fourth proportional to 268,503.09, 402,745.19 and 68,825.13 is: 103,235.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,503.09 : 402,745.19 = 68,825.13 : x
  2. Step 2: Convert to fraction form
    268,503.09/402,745.19 = 68,825.13/x
  3. Step 3: Cross multiply
    268,503.09x = 402,745.19 × 68,825.13
  4. Step 4: Simplify right side
    268,503.09x = 27,718,989,714.50
  5. Step 5: Solve for x
    x = 27,718,989,714.50/268,503.09
  6. Step 6: Final answer
    x = 103,235.27

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1.5x scale

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.