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Finding the Fourth Proportional to 198,473.69, 274,007.21 and 130,687.63

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Solution

The fourth proportional to 198,473.69, 274,007.21 and 130,687.63 is: 180,423.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,473.69 : 274,007.21 = 130,687.63 : x
  2. Step 2: Convert to fraction form
    198,473.69/274,007.21 = 130,687.63/x
  3. Step 3: Cross multiply
    198,473.69x = 274,007.21 × 130,687.63
  4. Step 4: Simplify right side
    198,473.69x = 35,809,351,539.36
  5. Step 5: Solve for x
    x = 35,809,351,539.36/198,473.69
  6. Step 6: Final answer
    x = 180,423.67

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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.