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Finding the Fourth Proportional to 616,728.72, 925,198.56 and 211,901.52

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Solution

The fourth proportional to 616,728.72, 925,198.56 and 211,901.52 is: 317,888.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,728.72 : 925,198.56 = 211,901.52 : x
  2. Step 2: Convert to fraction form
    616,728.72/925,198.56 = 211,901.52/x
  3. Step 3: Cross multiply
    616,728.72x = 925,198.56 × 211,901.52
  4. Step 4: Simplify right side
    616,728.72x = 196,050,981,165.81
  5. Step 5: Solve for x
    x = 196,050,981,165.81/616,728.72
  6. Step 6: Final answer
    x = 317,888.52

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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.