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Finding the Fourth Proportional to 253,980.39, 380,636.31 and 141,713.46

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Solution

The fourth proportional to 253,980.39, 380,636.31 and 141,713.46 is: 212,383.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,980.39 : 380,636.31 = 141,713.46 : x
  2. Step 2: Convert to fraction form
    253,980.39/380,636.31 = 141,713.46/x
  3. Step 3: Cross multiply
    253,980.39x = 380,636.31 × 141,713.46
  4. Step 4: Simplify right side
    253,980.39x = 53,941,288,491.73
  5. Step 5: Solve for x
    x = 53,941,288,491.73/253,980.39
  6. Step 6: Final answer
    x = 212,383.67

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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.