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Finding the Fourth Proportional to 270,353.85, 405,553.85 and 70,673.92

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Solution

The fourth proportional to 270,353.85, 405,553.85 and 70,673.92 is: 106,016.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,353.85 : 405,553.85 = 70,673.92 : x
  2. Step 2: Convert to fraction form
    270,353.85/405,553.85 = 70,673.92/x
  3. Step 3: Cross multiply
    270,353.85x = 405,553.85 × 70,673.92
  4. Step 4: Simplify right side
    270,353.85x = 28,662,080,350.59
  5. Step 5: Solve for x
    x = 28,662,080,350.59/270,353.85
  6. Step 6: Final answer
    x = 106,016.91

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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.