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Finding the Fourth Proportional to 270,040.80, 405,025.68 and 70,375.68

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Solution

The fourth proportional to 270,040.80, 405,025.68 and 70,375.68 is: 105,554.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,040.80 : 405,025.68 = 70,375.68 : x
  2. Step 2: Convert to fraction form
    270,040.80/405,025.68 = 70,375.68/x
  3. Step 3: Cross multiply
    270,040.80x = 405,025.68 × 70,375.68
  4. Step 4: Simplify right side
    270,040.80x = 28,503,957,647.46
  5. Step 5: Solve for x
    x = 28,503,957,647.46/270,040.80
  6. Step 6: Final answer
    x = 105,554.26

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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.