Home / 281,518.37-422,278.21-68,285.40

Finding the Fourth Proportional to 281,518.37, 422,278.21 and 68,285.40

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Solution

The fourth proportional to 281,518.37, 422,278.21 and 68,285.40 is: 102,428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,518.37 : 422,278.21 = 68,285.40 : x
  2. Step 2: Convert to fraction form
    281,518.37/422,278.21 = 68,285.40/x
  3. Step 3: Cross multiply
    281,518.37x = 422,278.21 × 68,285.40
  4. Step 4: Simplify right side
    281,518.37x = 28,835,434,982.95
  5. Step 5: Solve for x
    x = 28,835,434,982.95/281,518.37
  6. Step 6: Final answer
    x = 102,428.25

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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.