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Finding the Fourth Proportional to 240,381.75, 331,736.85 and 138,404.67

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Solution

The fourth proportional to 240,381.75, 331,736.85 and 138,404.67 is: 191,004.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,381.75 : 331,736.85 = 138,404.67 : x
  2. Step 2: Convert to fraction form
    240,381.75/331,736.85 = 138,404.67/x
  3. Step 3: Cross multiply
    240,381.75x = 331,736.85 × 138,404.67
  4. Step 4: Simplify right side
    240,381.75x = 45,913,929,388.41
  5. Step 5: Solve for x
    x = 45,913,929,388.41/240,381.75
  6. Step 6: Final answer
    x = 191,004.23

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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.