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Finding the Fourth Proportional to 291,770.28, 402,674.94 and 169,289.55

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Solution

The fourth proportional to 291,770.28, 402,674.94 and 169,289.55 is: 233,638.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,770.28 : 402,674.94 = 169,289.55 : x
  2. Step 2: Convert to fraction form
    291,770.28/402,674.94 = 169,289.55/x
  3. Step 3: Cross multiply
    291,770.28x = 402,674.94 × 169,289.55
  4. Step 4: Simplify right side
    291,770.28x = 68,168,659,388.88
  5. Step 5: Solve for x
    x = 68,168,659,388.88/291,770.28
  6. Step 6: Final answer
    x = 233,638.12

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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.