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Finding the Fourth Proportional to 279,609.65, 385,847.57 and 158,735.07

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Solution

The fourth proportional to 279,609.65, 385,847.57 and 158,735.07 is: 219,046.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,609.65 : 385,847.57 = 158,735.07 : x
  2. Step 2: Convert to fraction form
    279,609.65/385,847.57 = 158,735.07/x
  3. Step 3: Cross multiply
    279,609.65x = 385,847.57 × 158,735.07
  4. Step 4: Simplify right side
    279,609.65x = 61,247,541,033.28
  5. Step 5: Solve for x
    x = 61,247,541,033.28/279,609.65
  6. Step 6: Final answer
    x = 219,046.59

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1.5x scale

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.