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Finding the Fourth Proportional to 253,491.88, 380,106.60 and 135,131.44

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Solution

The fourth proportional to 253,491.88, 380,106.60 and 135,131.44 is: 202,627.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,491.88 : 380,106.60 = 135,131.44 : x
  2. Step 2: Convert to fraction form
    253,491.88/380,106.60 = 135,131.44/x
  3. Step 3: Cross multiply
    253,491.88x = 380,106.60 × 135,131.44
  4. Step 4: Simplify right side
    253,491.88x = 51,364,352,211.50
  5. Step 5: Solve for x
    x = 51,364,352,211.50/253,491.88
  6. Step 6: Final answer
    x = 202,627.21

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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.