Home / 320,217.31-480,308.64-162,441.67

Finding the Fourth Proportional to 320,217.31, 480,308.64 and 162,441.67

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Solution

The fourth proportional to 320,217.31, 480,308.64 and 162,441.67 is: 243,653.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,217.31 : 480,308.64 = 162,441.67 : x
  2. Step 2: Convert to fraction form
    320,217.31/480,308.64 = 162,441.67/x
  3. Step 3: Cross multiply
    320,217.31x = 480,308.64 × 162,441.67
  4. Step 4: Simplify right side
    320,217.31x = 78,022,137,597.03
  5. Step 5: Solve for x
    x = 78,022,137,597.03/320,217.31
  6. Step 6: Final answer
    x = 243,653.72

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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.