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Finding the Fourth Proportional to 324,249, 444,219.05 and 312,123.72

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Solution

The fourth proportional to 324,249, 444,219.05 and 312,123.72 is: 427,607.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,249 : 444,219.05 = 312,123.72 : x
  2. Step 2: Convert to fraction form
    324,249/444,219.05 = 312,123.72/x
  3. Step 3: Cross multiply
    324,249x = 444,219.05 × 312,123.72
  4. Step 4: Simplify right side
    324,249x = 138,651,302,380.87
  5. Step 5: Solve for x
    x = 138,651,302,380.87/324,249
  6. Step 6: Final answer
    x = 427,607.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.