Home / 355,890.57-491,162.40-212,647.56

Finding the Fourth Proportional to 355,890.57, 491,162.40 and 212,647.56

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Solution

The fourth proportional to 355,890.57, 491,162.40 and 212,647.56 is: 293,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,890.57 : 491,162.40 = 212,647.56 : x
  2. Step 2: Convert to fraction form
    355,890.57/491,162.40 = 212,647.56/x
  3. Step 3: Cross multiply
    355,890.57x = 491,162.40 × 212,647.56
  4. Step 4: Simplify right side
    355,890.57x = 104,444,485,923.74
  5. Step 5: Solve for x
    x = 104,444,485,923.74/355,890.57
  6. Step 6: Final answer
    x = 293,473.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.