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Finding the Fourth Proportional to 289,901.56, 400,063.39 and 162,579.89

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Solution

The fourth proportional to 289,901.56, 400,063.39 and 162,579.89 is: 224,359.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,901.56 : 400,063.39 = 162,579.89 : x
  2. Step 2: Convert to fraction form
    289,901.56/400,063.39 = 162,579.89/x
  3. Step 3: Cross multiply
    289,901.56x = 400,063.39 × 162,579.89
  4. Step 4: Simplify right side
    289,901.56x = 65,042,260,126.17
  5. Step 5: Solve for x
    x = 65,042,260,126.17/289,901.56
  6. Step 6: Final answer
    x = 224,359.81

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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.