Home / 221,515.40-305,604.42-136,484.84

Finding the Fourth Proportional to 221,515.40, 305,604.42 and 136,484.84

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Solution

The fourth proportional to 221,515.40, 305,604.42 and 136,484.84 is: 188,295.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,515.40 : 305,604.42 = 136,484.84 : x
  2. Step 2: Convert to fraction form
    221,515.40/305,604.42 = 136,484.84/x
  3. Step 3: Cross multiply
    221,515.40x = 305,604.42 × 136,484.84
  4. Step 4: Simplify right side
    221,515.40x = 41,710,370,366.99
  5. Step 5: Solve for x
    x = 41,710,370,366.99/221,515.40
  6. Step 6: Final answer
    x = 188,295.58

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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.