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Finding the Fourth Proportional to 220,162.95, 303,917.90 and 148,639.86

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Solution

The fourth proportional to 220,162.95, 303,917.90 and 148,639.86 is: 205,185.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,162.95 : 303,917.90 = 148,639.86 : x
  2. Step 2: Convert to fraction form
    220,162.95/303,917.90 = 148,639.86/x
  3. Step 3: Cross multiply
    220,162.95x = 303,917.90 × 148,639.86
  4. Step 4: Simplify right side
    220,162.95x = 45,174,313,364.29
  5. Step 5: Solve for x
    x = 45,174,313,364.29/220,162.95
  6. Step 6: Final answer
    x = 205,185.81

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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.