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Finding the Fourth Proportional to 289,674.28, 399,331.62 and 203,370.52

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Solution

The fourth proportional to 289,674.28, 399,331.62 and 203,370.52 is: 280,357.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,674.28 : 399,331.62 = 203,370.52 : x
  2. Step 2: Convert to fraction form
    289,674.28/399,331.62 = 203,370.52/x
  3. Step 3: Cross multiply
    289,674.28x = 399,331.62 × 203,370.52
  4. Step 4: Simplify right side
    289,674.28x = 81,212,279,211.84
  5. Step 5: Solve for x
    x = 81,212,279,211.84/289,674.28
  6. Step 6: Final answer
    x = 280,357.23

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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.