Home / 221,415.42-305,554.47-120,815.58

Finding the Fourth Proportional to 221,415.42, 305,554.47 and 120,815.58

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Solution

The fourth proportional to 221,415.42, 305,554.47 and 120,815.58 is: 166,726.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,415.42 : 305,554.47 = 120,815.58 : x
  2. Step 2: Convert to fraction form
    221,415.42/305,554.47 = 120,815.58/x
  3. Step 3: Cross multiply
    221,415.42x = 305,554.47 × 120,815.58
  4. Step 4: Simplify right side
    221,415.42x = 36,915,740,514.64
  5. Step 5: Solve for x
    x = 36,915,740,514.64/221,415.42
  6. Step 6: Final answer
    x = 166,726.15

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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.