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Finding the Fourth Proportional to 270,086.22, 405,129.51 and 70,406.10

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Solution

The fourth proportional to 270,086.22, 405,129.51 and 70,406.10 is: 105,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,086.22 : 405,129.51 = 70,406.10 : x
  2. Step 2: Convert to fraction form
    270,086.22/405,129.51 = 70,406.10/x
  3. Step 3: Cross multiply
    270,086.22x = 405,129.51 × 70,406.10
  4. Step 4: Simplify right side
    270,086.22x = 28,523,588,794.01
  5. Step 5: Solve for x
    x = 28,523,588,794.01/270,086.22
  6. Step 6: Final answer
    x = 105,609.20

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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.