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Finding the Fourth Proportional to 279,609.15, 385,846.88 and 158,734.58

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Solution

The fourth proportional to 279,609.15, 385,846.88 and 158,734.58 is: 219,045.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,609.15 : 385,846.88 = 158,734.58 : x
  2. Step 2: Convert to fraction form
    279,609.15/385,846.88 = 158,734.58/x
  3. Step 3: Cross multiply
    279,609.15x = 385,846.88 × 158,734.58
  4. Step 4: Simplify right side
    279,609.15x = 61,247,240,115.04
  5. Step 5: Solve for x
    x = 61,247,240,115.04/279,609.15
  6. Step 6: Final answer
    x = 219,045.91

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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.