Home / 320,930.81-442,898.36-177,690.85

Finding the Fourth Proportional to 320,930.81, 442,898.36 and 177,690.85

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Solution

The fourth proportional to 320,930.81, 442,898.36 and 177,690.85 is: 245,221.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,930.81 : 442,898.36 = 177,690.85 : x
  2. Step 2: Convert to fraction form
    320,930.81/442,898.36 = 177,690.85/x
  3. Step 3: Cross multiply
    320,930.81x = 442,898.36 × 177,690.85
  4. Step 4: Simplify right side
    320,930.81x = 78,698,986,052.01
  5. Step 5: Solve for x
    x = 78,698,986,052.01/320,930.81
  6. Step 6: Final answer
    x = 245,221.04

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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.