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Finding the Fourth Proportional to 423,351.42, 635,137.79 and 245,687.64

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Solution

The fourth proportional to 423,351.42, 635,137.79 and 245,687.64 is: 368,595.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,351.42 : 635,137.79 = 245,687.64 : x
  2. Step 2: Convert to fraction form
    423,351.42/635,137.79 = 245,687.64/x
  3. Step 3: Cross multiply
    423,351.42x = 635,137.79 × 245,687.64
  4. Step 4: Simplify right side
    423,351.42x = 156,045,503,471.48
  5. Step 5: Solve for x
    x = 156,045,503,471.48/423,351.42
  6. Step 6: Final answer
    x = 368,595.68

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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.