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Finding the Fourth Proportional to 287,471.46, 393,837.32 and 276,697.24

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Solution

The fourth proportional to 287,471.46, 393,837.32 and 276,697.24 is: 379,076.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,471.46 : 393,837.32 = 276,697.24 : x
  2. Step 2: Convert to fraction form
    287,471.46/393,837.32 = 276,697.24/x
  3. Step 3: Cross multiply
    287,471.46x = 393,837.32 × 276,697.24
  4. Step 4: Simplify right side
    287,471.46x = 108,973,699,453.00
  5. Step 5: Solve for x
    x = 108,973,699,453.00/287,471.46
  6. Step 6: Final answer
    x = 379,076.59

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.