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Finding the Fourth Proportional to 228,612.33, 315,489.50 and 136,826.13

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Solution

The fourth proportional to 228,612.33, 315,489.50 and 136,826.13 is: 188,822.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,612.33 : 315,489.50 = 136,826.13 : x
  2. Step 2: Convert to fraction form
    228,612.33/315,489.50 = 136,826.13/x
  3. Step 3: Cross multiply
    228,612.33x = 315,489.50 × 136,826.13
  4. Step 4: Simplify right side
    228,612.33x = 43,167,206,656.50
  5. Step 5: Solve for x
    x = 43,167,206,656.50/228,612.33
  6. Step 6: Final answer
    x = 188,822.74

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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.