Home / 285,830.10-428,745.18-75,469.86

Finding the Fourth Proportional to 285,830.10, 428,745.18 and 75,469.86

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Solution

The fourth proportional to 285,830.10, 428,745.18 and 75,469.86 is: 113,204.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,830.10 : 428,745.18 = 75,469.86 : x
  2. Step 2: Convert to fraction form
    285,830.10/428,745.18 = 75,469.86/x
  3. Step 3: Cross multiply
    285,830.10x = 428,745.18 × 75,469.86
  4. Step 4: Simplify right side
    285,830.10x = 32,357,338,710.27
  5. Step 5: Solve for x
    x = 32,357,338,710.27/285,830.10
  6. Step 6: Final answer
    x = 113,204.80

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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.