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Finding the Fourth Proportional to 289,614.88, 399,662.04 and 168,748.64

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Solution

The fourth proportional to 289,614.88, 399,662.04 and 168,748.64 is: 232,869.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,614.88 : 399,662.04 = 168,748.64 : x
  2. Step 2: Convert to fraction form
    289,614.88/399,662.04 = 168,748.64/x
  3. Step 3: Cross multiply
    289,614.88x = 399,662.04 × 168,748.64
  4. Step 4: Simplify right side
    289,614.88x = 67,442,425,709.63
  5. Step 5: Solve for x
    x = 67,442,425,709.63/289,614.88
  6. Step 6: Final answer
    x = 232,869.34

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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.