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Finding the Fourth Proportional to 221,252.80, 305,310.72 and 125,737.60

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Solution

The fourth proportional to 221,252.80, 305,310.72 and 125,737.60 is: 173,507.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,252.80 : 305,310.72 = 125,737.60 : x
  2. Step 2: Convert to fraction form
    221,252.80/305,310.72 = 125,737.60/x
  3. Step 3: Cross multiply
    221,252.80x = 305,310.72 × 125,737.60
  4. Step 4: Simplify right side
    221,252.80x = 38,389,037,187.07
  5. Step 5: Solve for x
    x = 38,389,037,187.07/221,252.80
  6. Step 6: Final answer
    x = 173,507.58

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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.