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Finding the Fourth Proportional to 270,623.16, 405,806.76 and 81,010.44

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Solution

The fourth proportional to 270,623.16, 405,806.76 and 81,010.44 is: 121,477.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,623.16 : 405,806.76 = 81,010.44 : x
  2. Step 2: Convert to fraction form
    270,623.16/405,806.76 = 81,010.44/x
  3. Step 3: Cross multiply
    270,623.16x = 405,806.76 × 81,010.44
  4. Step 4: Simplify right side
    270,623.16x = 32,874,584,182.57
  5. Step 5: Solve for x
    x = 32,874,584,182.57/270,623.16
  6. Step 6: Final answer
    x = 121,477.35

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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.