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Finding the Fourth Proportional to 313,008.46, 431,961.45 and 177,039.75

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Solution

The fourth proportional to 313,008.46, 431,961.45 and 177,039.75 is: 244,320.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,008.46 : 431,961.45 = 177,039.75 : x
  2. Step 2: Convert to fraction form
    313,008.46/431,961.45 = 177,039.75/x
  3. Step 3: Cross multiply
    313,008.46x = 431,961.45 × 177,039.75
  4. Step 4: Simplify right side
    313,008.46x = 76,474,348,073.59
  5. Step 5: Solve for x
    x = 76,474,348,073.59/313,008.46
  6. Step 6: Final answer
    x = 244,320.39

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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.