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Finding the Fourth Proportional to 279,182.62, 385,340.44 and 158,394.61

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Solution

The fourth proportional to 279,182.62, 385,340.44 and 158,394.61 is: 218,623.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,182.62 : 385,340.44 = 158,394.61 : x
  2. Step 2: Convert to fraction form
    279,182.62/385,340.44 = 158,394.61/x
  3. Step 3: Cross multiply
    279,182.62x = 385,340.44 × 158,394.61
  4. Step 4: Simplify right side
    279,182.62x = 61,035,846,784.33
  5. Step 5: Solve for x
    x = 61,035,846,784.33/279,182.62
  6. Step 6: Final answer
    x = 218,623.38

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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.