Home / 221,378.46-305,500.75-125,885.13

Finding the Fourth Proportional to 221,378.46, 305,500.75 and 125,885.13

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Solution

The fourth proportional to 221,378.46, 305,500.75 and 125,885.13 is: 173,720.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,378.46 : 305,500.75 = 125,885.13 : x
  2. Step 2: Convert to fraction form
    221,378.46/305,500.75 = 125,885.13/x
  3. Step 3: Cross multiply
    221,378.46x = 305,500.75 × 125,885.13
  4. Step 4: Simplify right side
    221,378.46x = 38,458,001,628.85
  5. Step 5: Solve for x
    x = 38,458,001,628.85/221,378.46
  6. Step 6: Final answer
    x = 173,720.61

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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.