Home / 397,836.45-549,028.79-216,539.62

Finding the Fourth Proportional to 397,836.45, 549,028.79 and 216,539.62

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Solution

The fourth proportional to 397,836.45, 549,028.79 and 216,539.62 is: 298,832.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,836.45 : 549,028.79 = 216,539.62 : x
  2. Step 2: Convert to fraction form
    397,836.45/549,028.79 = 216,539.62/x
  3. Step 3: Cross multiply
    397,836.45x = 549,028.79 × 216,539.62
  4. Step 4: Simplify right side
    397,836.45x = 118,886,481,727.82
  5. Step 5: Solve for x
    x = 118,886,481,727.82/397,836.45
  6. Step 6: Final answer
    x = 298,832.55

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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.