Home / 397,930.38-549,147.24-216,643.56

Finding the Fourth Proportional to 397,930.38, 549,147.24 and 216,643.56

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Solution

The fourth proportional to 397,930.38, 549,147.24 and 216,643.56 is: 298,969.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,930.38 : 549,147.24 = 216,643.56 : x
  2. Step 2: Convert to fraction form
    397,930.38/549,147.24 = 216,643.56/x
  3. Step 3: Cross multiply
    397,930.38x = 549,147.24 × 216,643.56
  4. Step 4: Simplify right side
    397,930.38x = 118,969,213,037.77
  5. Step 5: Solve for x
    x = 118,969,213,037.77/397,930.38
  6. Step 6: Final answer
    x = 298,969.92

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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.