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Finding the Fourth Proportional to 469,274.99, 647,551.02 and 287,994.56

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Solution

The fourth proportional to 469,274.99, 647,551.02 and 287,994.56 is: 397,402.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,274.99 : 647,551.02 = 287,994.56 : x
  2. Step 2: Convert to fraction form
    469,274.99/647,551.02 = 287,994.56/x
  3. Step 3: Cross multiply
    469,274.99x = 647,551.02 × 287,994.56
  4. Step 4: Simplify right side
    469,274.99x = 186,491,169,193.03
  5. Step 5: Solve for x
    x = 186,491,169,193.03/469,274.99
  6. Step 6: Final answer
    x = 397,402.75

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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.