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Finding the Fourth Proportional to 289,667.32, 399,739.98 and 168,880.12

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Solution

The fourth proportional to 289,667.32, 399,739.98 and 168,880.12 is: 233,054.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,667.32 : 399,739.98 = 168,880.12 : x
  2. Step 2: Convert to fraction form
    289,667.32/399,739.98 = 168,880.12/x
  3. Step 3: Cross multiply
    289,667.32x = 399,739.98 × 168,880.12
  4. Step 4: Simplify right side
    289,667.32x = 67,508,135,791.20
  5. Step 5: Solve for x
    x = 67,508,135,791.20/289,667.32
  6. Step 6: Final answer
    x = 233,054.03

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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.