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Finding the Fourth Proportional to 228,707.56, 315,626.46 and 126,732.76

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Solution

The fourth proportional to 228,707.56, 315,626.46 and 126,732.76 is: 174,896.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,707.56 : 315,626.46 = 126,732.76 : x
  2. Step 2: Convert to fraction form
    228,707.56/315,626.46 = 126,732.76/x
  3. Step 3: Cross multiply
    228,707.56x = 315,626.46 × 126,732.76
  4. Step 4: Simplify right side
    228,707.56x = 40,000,213,894.42
  5. Step 5: Solve for x
    x = 40,000,213,894.42/228,707.56
  6. Step 6: Final answer
    x = 174,896.77

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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.