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Finding the Fourth Proportional to 228,861.83, 315,847.96 and 126,919.24

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Solution

The fourth proportional to 228,861.83, 315,847.96 and 126,919.24 is: 175,158.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,861.83 : 315,847.96 = 126,919.24 : x
  2. Step 2: Convert to fraction form
    228,861.83/315,847.96 = 126,919.24/x
  3. Step 3: Cross multiply
    228,861.83x = 315,847.96 × 126,919.24
  4. Step 4: Simplify right side
    228,861.83x = 40,087,181,931.83
  5. Step 5: Solve for x
    x = 40,087,181,931.83/228,861.83
  6. Step 6: Final answer
    x = 175,158.88

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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.