Home / 430,724.31-646,119.26-131,230.45

Finding the Fourth Proportional to 430,724.31, 646,119.26 and 131,230.45

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Solution

The fourth proportional to 430,724.31, 646,119.26 and 131,230.45 is: 196,855.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,724.31 : 646,119.26 = 131,230.45 : x
  2. Step 2: Convert to fraction form
    430,724.31/646,119.26 = 131,230.45/x
  3. Step 3: Cross multiply
    430,724.31x = 646,119.26 × 131,230.45
  4. Step 4: Simplify right side
    430,724.31x = 84,790,521,243.47
  5. Step 5: Solve for x
    x = 84,790,521,243.47/430,724.31
  6. Step 6: Final answer
    x = 196,855.67

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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.