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Finding the Fourth Proportional to 270,379.50, 405,540.04 and 90,444.53

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Solution

The fourth proportional to 270,379.50, 405,540.04 and 90,444.53 is: 135,657.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,379.50 : 405,540.04 = 90,444.53 : x
  2. Step 2: Convert to fraction form
    270,379.50/405,540.04 = 90,444.53/x
  3. Step 3: Cross multiply
    270,379.50x = 405,540.04 × 90,444.53
  4. Step 4: Simplify right side
    270,379.50x = 36,678,878,313.98
  5. Step 5: Solve for x
    x = 36,678,878,313.98/270,379.50
  6. Step 6: Final answer
    x = 135,657.02

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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.