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Finding the Fourth Proportional to 228,855.29, 315,839.01 and 126,912.72

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Solution

The fourth proportional to 228,855.29, 315,839.01 and 126,912.72 is: 175,149.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,855.29 : 315,839.01 = 126,912.72 : x
  2. Step 2: Convert to fraction form
    228,855.29/315,839.01 = 126,912.72/x
  3. Step 3: Cross multiply
    228,855.29x = 315,839.01 × 126,912.72
  4. Step 4: Simplify right side
    228,855.29x = 40,083,989,501.53
  5. Step 5: Solve for x
    x = 40,083,989,501.53/228,855.29
  6. Step 6: Final answer
    x = 175,149.94

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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.