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Finding the Fourth Proportional to 616,986.69, 925,500.52 and 212,174.92

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Solution

The fourth proportional to 616,986.69, 925,500.52 and 212,174.92 is: 318,269.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,986.69 : 925,500.52 = 212,174.92 : x
  2. Step 2: Convert to fraction form
    616,986.69/925,500.52 = 212,174.92/x
  3. Step 3: Cross multiply
    616,986.69x = 925,500.52 × 212,174.92
  4. Step 4: Simplify right side
    616,986.69x = 196,368,000,321.05
  5. Step 5: Solve for x
    x = 196,368,000,321.05/616,986.69
  6. Step 6: Final answer
    x = 318,269.43

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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.