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Finding the Fourth Proportional to 289,245.40, 433,673.70 and 131,392.60

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Solution

The fourth proportional to 289,245.40, 433,673.70 and 131,392.60 is: 197,000.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,245.40 : 433,673.70 = 131,392.60 : x
  2. Step 2: Convert to fraction form
    289,245.40/433,673.70 = 131,392.60/x
  3. Step 3: Cross multiply
    289,245.40x = 433,673.70 × 131,392.60
  4. Step 4: Simplify right side
    289,245.40x = 56,981,514,994.62
  5. Step 5: Solve for x
    x = 56,981,514,994.62/289,245.40
  6. Step 6: Final answer
    x = 197,000.59

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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.