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Finding the Fourth Proportional to 318,431.59, 439,385.50 and 182,439.34

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Solution

The fourth proportional to 318,431.59, 439,385.50 and 182,439.34 is: 251,737.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,431.59 : 439,385.50 = 182,439.34 : x
  2. Step 2: Convert to fraction form
    318,431.59/439,385.50 = 182,439.34/x
  3. Step 3: Cross multiply
    318,431.59x = 439,385.50 × 182,439.34
  4. Step 4: Simplify right side
    318,431.59x = 80,161,200,625.57
  5. Step 5: Solve for x
    x = 80,161,200,625.57/318,431.59
  6. Step 6: Final answer
    x = 251,737.59

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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.