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Finding the Fourth Proportional to 275,713.35, 380,483.50 and 153,205.21

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Solution

The fourth proportional to 275,713.35, 380,483.50 and 153,205.21 is: 211,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,713.35 : 380,483.50 = 153,205.21 : x
  2. Step 2: Convert to fraction form
    275,713.35/380,483.50 = 153,205.21/x
  3. Step 3: Cross multiply
    275,713.35x = 380,483.50 × 153,205.21
  4. Step 4: Simplify right side
    275,713.35x = 58,292,053,189.56
  5. Step 5: Solve for x
    x = 58,292,053,189.56/275,713.35
  6. Step 6: Final answer
    x = 211,422.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.