Home / 320,930.60-442,898.06-177,690.64

Finding the Fourth Proportional to 320,930.60, 442,898.06 and 177,690.64

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Solution

The fourth proportional to 320,930.60, 442,898.06 and 177,690.64 is: 245,220.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,930.60 : 442,898.06 = 177,690.64 : x
  2. Step 2: Convert to fraction form
    320,930.60/442,898.06 = 177,690.64/x
  3. Step 3: Cross multiply
    320,930.60x = 442,898.06 × 177,690.64
  4. Step 4: Simplify right side
    320,930.60x = 78,698,839,073.14
  5. Step 5: Solve for x
    x = 78,698,839,073.14/320,930.60
  6. Step 6: Final answer
    x = 245,220.74

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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.