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Finding the Fourth Proportional to 253,691.56, 380,676.66 and 147,205.72

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Solution

The fourth proportional to 253,691.56, 380,676.66 and 147,205.72 is: 220,889.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,691.56 : 380,676.66 = 147,205.72 : x
  2. Step 2: Convert to fraction form
    253,691.56/380,676.66 = 147,205.72/x
  3. Step 3: Cross multiply
    253,691.56x = 380,676.66 × 147,205.72
  4. Step 4: Simplify right side
    253,691.56x = 56,037,779,183.08
  5. Step 5: Solve for x
    x = 56,037,779,183.08/253,691.56
  6. Step 6: Final answer
    x = 220,889.42

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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.