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Finding the Fourth Proportional to 270,487.52, 405,768.20 and 112,679.06

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Solution

The fourth proportional to 270,487.52, 405,768.20 and 112,679.06 is: 169,033.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,487.52 : 405,768.20 = 112,679.06 : x
  2. Step 2: Convert to fraction form
    270,487.52/405,768.20 = 112,679.06/x
  3. Step 3: Cross multiply
    270,487.52x = 405,768.20 × 112,679.06
  4. Step 4: Simplify right side
    270,487.52x = 45,721,579,353.89
  5. Step 5: Solve for x
    x = 45,721,579,353.89/270,487.52
  6. Step 6: Final answer
    x = 169,033.97

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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.