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Finding the Fourth Proportional to 324,331.67, 447,331.40 and 279,085.47

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Solution

The fourth proportional to 324,331.67, 447,331.40 and 279,085.47 is: 384,926.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,331.67 : 447,331.40 = 279,085.47 : x
  2. Step 2: Convert to fraction form
    324,331.67/447,331.40 = 279,085.47/x
  3. Step 3: Cross multiply
    324,331.67x = 447,331.40 × 279,085.47
  4. Step 4: Simplify right side
    324,331.67x = 124,843,692,619.33
  5. Step 5: Solve for x
    x = 124,843,692,619.33/324,331.67
  6. Step 6: Final answer
    x = 384,926.01

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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.