Home / 494,890.12-742,187.10-258,103.60

Finding the Fourth Proportional to 494,890.12, 742,187.10 and 258,103.60

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Solution

The fourth proportional to 494,890.12, 742,187.10 and 258,103.60 is: 387,078.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,890.12 : 742,187.10 = 258,103.60 : x
  2. Step 2: Convert to fraction form
    494,890.12/742,187.10 = 258,103.60/x
  3. Step 3: Cross multiply
    494,890.12x = 742,187.10 × 258,103.60
  4. Step 4: Simplify right side
    494,890.12x = 191,561,162,383.56
  5. Step 5: Solve for x
    x = 191,561,162,383.56/494,890.12
  6. Step 6: Final answer
    x = 387,078.17

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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.