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Finding the Fourth Proportional to 228,990.76, 315,947.46 and 132,170.92

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Solution

The fourth proportional to 228,990.76, 315,947.46 and 132,170.92 is: 182,361.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,990.76 : 315,947.46 = 132,170.92 : x
  2. Step 2: Convert to fraction form
    228,990.76/315,947.46 = 132,170.92/x
  3. Step 3: Cross multiply
    228,990.76x = 315,947.46 × 132,170.92
  4. Step 4: Simplify right side
    228,990.76x = 41,759,066,459.86
  5. Step 5: Solve for x
    x = 41,759,066,459.86/228,990.76
  6. Step 6: Final answer
    x = 182,361.36

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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.