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Finding the Fourth Proportional to 203,779.20, 305,682.30 and 54,017.40

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Solution

The fourth proportional to 203,779.20, 305,682.30 and 54,017.40 is: 81,029.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,779.20 : 305,682.30 = 54,017.40 : x
  2. Step 2: Convert to fraction form
    203,779.20/305,682.30 = 54,017.40/x
  3. Step 3: Cross multiply
    203,779.20x = 305,682.30 × 54,017.40
  4. Step 4: Simplify right side
    203,779.20x = 16,512,163,072.02
  5. Step 5: Solve for x
    x = 16,512,163,072.02/203,779.20
  6. Step 6: Final answer
    x = 81,029.68

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1.5x scale

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.