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Finding the Fourth Proportional to 228,260.73, 315,100.70 and 136,412.43

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Solution

The fourth proportional to 228,260.73, 315,100.70 and 136,412.43 is: 188,309.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,260.73 : 315,100.70 = 136,412.43 : x
  2. Step 2: Convert to fraction form
    228,260.73/315,100.70 = 136,412.43/x
  3. Step 3: Cross multiply
    228,260.73x = 315,100.70 × 136,412.43
  4. Step 4: Simplify right side
    228,260.73x = 42,983,652,181.70
  5. Step 5: Solve for x
    x = 42,983,652,181.70/228,260.73
  6. Step 6: Final answer
    x = 188,309.45

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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.