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Finding the Fourth Proportional to 262,521.30, 393,844.68 and 85,028.52

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Solution

The fourth proportional to 262,521.30, 393,844.68 and 85,028.52 is: 127,563.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,521.30 : 393,844.68 = 85,028.52 : x
  2. Step 2: Convert to fraction form
    262,521.30/393,844.68 = 85,028.52/x
  3. Step 3: Cross multiply
    262,521.30x = 393,844.68 × 85,028.52
  4. Step 4: Simplify right side
    262,521.30x = 33,488,030,250.27
  5. Step 5: Solve for x
    x = 33,488,030,250.27/262,521.30
  6. Step 6: Final answer
    x = 127,563.10

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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.