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Finding the Fourth Proportional to 240,648.32, 331,879.20 and 155,676.80

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Solution

The fourth proportional to 240,648.32, 331,879.20 and 155,676.80 is: 214,694.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,648.32 : 331,879.20 = 155,676.80 : x
  2. Step 2: Convert to fraction form
    240,648.32/331,879.20 = 155,676.80/x
  3. Step 3: Cross multiply
    240,648.32x = 331,879.20 × 155,676.80
  4. Step 4: Simplify right side
    240,648.32x = 51,665,891,842.56
  5. Step 5: Solve for x
    x = 51,665,891,842.56/240,648.32
  6. Step 6: Final answer
    x = 214,694.59

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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.