Home / 320,971.84-442,940.96-177,731.76

Finding the Fourth Proportional to 320,971.84, 442,940.96 and 177,731.76

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Solution

The fourth proportional to 320,971.84, 442,940.96 and 177,731.76 is: 245,269.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,971.84 : 442,940.96 = 177,731.76 : x
  2. Step 2: Convert to fraction form
    320,971.84/442,940.96 = 177,731.76/x
  3. Step 3: Cross multiply
    320,971.84x = 442,940.96 × 177,731.76
  4. Step 4: Simplify right side
    320,971.84x = 78,724,676,396.89
  5. Step 5: Solve for x
    x = 78,724,676,396.89/320,971.84
  6. Step 6: Final answer
    x = 245,269.73

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1.5x scale

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.