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Finding the Fourth Proportional to 455,359.83, 682,915.02 and 171,028.40

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Solution

The fourth proportional to 455,359.83, 682,915.02 and 171,028.40 is: 256,495.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,359.83 : 682,915.02 = 171,028.40 : x
  2. Step 2: Convert to fraction form
    455,359.83/682,915.02 = 171,028.40/x
  3. Step 3: Cross multiply
    455,359.83x = 682,915.02 × 171,028.40
  4. Step 4: Simplify right side
    455,359.83x = 116,797,859,150.64
  5. Step 5: Solve for x
    x = 116,797,859,150.64/455,359.83
  6. Step 6: Final answer
    x = 256,495.75

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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.