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Finding the Fourth Proportional to 289,034.80, 433,260.60 and 131,376.40

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Solution

The fourth proportional to 289,034.80, 433,260.60 and 131,376.40 is: 196,932.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,034.80 : 433,260.60 = 131,376.40 : x
  2. Step 2: Convert to fraction form
    289,034.80/433,260.60 = 131,376.40/x
  3. Step 3: Cross multiply
    289,034.80x = 433,260.60 × 131,376.40
  4. Step 4: Simplify right side
    289,034.80x = 56,920,217,889.84
  5. Step 5: Solve for x
    x = 56,920,217,889.84/289,034.80
  6. Step 6: Final answer
    x = 196,932.06

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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.