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Finding the Fourth Proportional to 354,381.44, 531,572.16 and 243,236.48

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Solution

The fourth proportional to 354,381.44, 531,572.16 and 243,236.48 is: 364,854.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,381.44 : 531,572.16 = 243,236.48 : x
  2. Step 2: Convert to fraction form
    354,381.44/531,572.16 = 243,236.48/x
  3. Step 3: Cross multiply
    354,381.44x = 531,572.16 × 243,236.48
  4. Step 4: Simplify right side
    354,381.44x = 129,297,741,064.40
  5. Step 5: Solve for x
    x = 129,297,741,064.40/354,381.44
  6. Step 6: Final answer
    x = 364,854.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.