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Finding the Fourth Proportional to 330,014.70, 455,420.79 and 179,112.06

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Solution

The fourth proportional to 330,014.70, 455,420.79 and 179,112.06 is: 247,174.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,014.70 : 455,420.79 = 179,112.06 : x
  2. Step 2: Convert to fraction form
    330,014.70/455,420.79 = 179,112.06/x
  3. Step 3: Cross multiply
    330,014.70x = 455,420.79 × 179,112.06
  4. Step 4: Simplify right side
    330,014.70x = 81,571,355,863.73
  5. Step 5: Solve for x
    x = 81,571,355,863.73/330,014.70
  6. Step 6: Final answer
    x = 247,174.92

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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.