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Finding the Fourth Proportional to 288,676.70, 433,015.05 and 131,212.70

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Solution

The fourth proportional to 288,676.70, 433,015.05 and 131,212.70 is: 196,819.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,676.70 : 433,015.05 = 131,212.70 : x
  2. Step 2: Convert to fraction form
    288,676.70/433,015.05 = 131,212.70/x
  3. Step 3: Cross multiply
    288,676.70x = 433,015.05 × 131,212.70
  4. Step 4: Simplify right side
    288,676.70x = 56,817,073,851.14
  5. Step 5: Solve for x
    x = 56,817,073,851.14/288,676.70
  6. Step 6: Final answer
    x = 196,819.05

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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.