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Finding the Fourth Proportional to 275,769.54, 380,520.53 and 154,887.68

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Solution

The fourth proportional to 275,769.54, 380,520.53 and 154,887.68 is: 213,721.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,769.54 : 380,520.53 = 154,887.68 : x
  2. Step 2: Convert to fraction form
    275,769.54/380,520.53 = 154,887.68/x
  3. Step 3: Cross multiply
    275,769.54x = 380,520.53 × 154,887.68
  4. Step 4: Simplify right side
    275,769.54x = 58,937,939,407.03
  5. Step 5: Solve for x
    x = 58,937,939,407.03/275,769.54
  6. Step 6: Final answer
    x = 213,721.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.