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Finding the Fourth Proportional to 221,039.88, 305,037.46 and 120,437.88

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Solution

The fourth proportional to 221,039.88, 305,037.46 and 120,437.88 is: 166,205.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,039.88 : 305,037.46 = 120,437.88 : x
  2. Step 2: Convert to fraction form
    221,039.88/305,037.46 = 120,437.88/x
  3. Step 3: Cross multiply
    221,039.88x = 305,037.46 × 120,437.88
  4. Step 4: Simplify right side
    221,039.88x = 36,738,065,002.98
  5. Step 5: Solve for x
    x = 36,738,065,002.98/221,039.88
  6. Step 6: Final answer
    x = 166,205.60

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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.