Home / 330,253.20-455,938.47-217,404

Finding the Fourth Proportional to 330,253.20, 455,938.47 and 217,404

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Solution

The fourth proportional to 330,253.20, 455,938.47 and 217,404 is: 300,141.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,253.20 : 455,938.47 = 217,404 : x
  2. Step 2: Convert to fraction form
    330,253.20/455,938.47 = 217,404/x
  3. Step 3: Cross multiply
    330,253.20x = 455,938.47 × 217,404
  4. Step 4: Simplify right side
    330,253.20x = 99,122,847,131.88
  5. Step 5: Solve for x
    x = 99,122,847,131.88/330,253.20
  6. Step 6: Final answer
    x = 300,141.97

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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.