Home / 289,639.22-434,459.17-121,067.31

Finding the Fourth Proportional to 289,639.22, 434,459.17 and 121,067.31

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Solution

The fourth proportional to 289,639.22, 434,459.17 and 121,067.31 is: 181,601.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,639.22 : 434,459.17 = 121,067.31 : x
  2. Step 2: Convert to fraction form
    289,639.22/434,459.17 = 121,067.31/x
  3. Step 3: Cross multiply
    289,639.22x = 434,459.17 × 121,067.31
  4. Step 4: Simplify right side
    289,639.22x = 52,598,802,012.95
  5. Step 5: Solve for x
    x = 52,598,802,012.95/289,639.22
  6. Step 6: Final answer
    x = 181,601.11

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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.