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Finding the Fourth Proportional to 289,654.56, 399,739.08 and 162,371.04

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Solution

The fourth proportional to 289,654.56, 399,739.08 and 162,371.04 is: 224,080.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,654.56 : 399,739.08 = 162,371.04 : x
  2. Step 2: Convert to fraction form
    289,654.56/399,739.08 = 162,371.04/x
  3. Step 3: Cross multiply
    289,654.56x = 399,739.08 × 162,371.04
  4. Step 4: Simplify right side
    289,654.56x = 64,906,050,148.24
  5. Step 5: Solve for x
    x = 64,906,050,148.24/289,654.56
  6. Step 6: Final answer
    x = 224,080.88

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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.