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Finding the Fourth Proportional to 289,805.52, 434,709.78 and 131,923.56

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Solution

The fourth proportional to 289,805.52, 434,709.78 and 131,923.56 is: 197,886.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,805.52 : 434,709.78 = 131,923.56 : x
  2. Step 2: Convert to fraction form
    289,805.52/434,709.78 = 131,923.56/x
  3. Step 3: Cross multiply
    289,805.52x = 434,709.78 × 131,923.56
  4. Step 4: Simplify right side
    289,805.52x = 57,348,461,744.42
  5. Step 5: Solve for x
    x = 57,348,461,744.42/289,805.52
  6. Step 6: Final answer
    x = 197,886.02

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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.