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Finding the Fourth Proportional to 270,432.21, 405,670.19 and 92,939.34

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Solution

The fourth proportional to 270,432.21, 405,670.19 and 92,939.34 is: 139,416.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,432.21 : 405,670.19 = 92,939.34 : x
  2. Step 2: Convert to fraction form
    270,432.21/405,670.19 = 92,939.34/x
  3. Step 3: Cross multiply
    270,432.21x = 405,670.19 × 92,939.34
  4. Step 4: Simplify right side
    270,432.21x = 37,702,719,251.58
  5. Step 5: Solve for x
    x = 37,702,719,251.58/270,432.21
  6. Step 6: Final answer
    x = 139,416.53

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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.