Home / 285,474.08-428,271.24-107,977.20

Finding the Fourth Proportional to 285,474.08, 428,271.24 and 107,977.20

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Solution

The fourth proportional to 285,474.08, 428,271.24 and 107,977.20 is: 161,988.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,474.08 : 428,271.24 = 107,977.20 : x
  2. Step 2: Convert to fraction form
    285,474.08/428,271.24 = 107,977.20/x
  3. Step 3: Cross multiply
    285,474.08x = 428,271.24 × 107,977.20
  4. Step 4: Simplify right side
    285,474.08x = 46,243,529,335.73
  5. Step 5: Solve for x
    x = 46,243,529,335.73/285,474.08
  6. Step 6: Final answer
    x = 161,988.54

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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.