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Finding the Fourth Proportional to 289,816.92, 399,871.62 and 167,279.31

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Solution

The fourth proportional to 289,816.92, 399,871.62 and 167,279.31 is: 230,801.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,816.92 : 399,871.62 = 167,279.31 : x
  2. Step 2: Convert to fraction form
    289,816.92/399,871.62 = 167,279.31/x
  3. Step 3: Cross multiply
    289,816.92x = 399,871.62 × 167,279.31
  4. Step 4: Simplify right side
    289,816.92x = 66,890,248,682.18
  5. Step 5: Solve for x
    x = 66,890,248,682.18/289,816.92
  6. Step 6: Final answer
    x = 230,801.74

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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.