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Finding the Fourth Proportional to 636,236.51, 954,329.85 and 215,512.38

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Solution

The fourth proportional to 636,236.51, 954,329.85 and 215,512.38 is: 323,260.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,236.51 : 954,329.85 = 215,512.38 : x
  2. Step 2: Convert to fraction form
    636,236.51/954,329.85 = 215,512.38/x
  3. Step 3: Cross multiply
    636,236.51x = 954,329.85 × 215,512.38
  4. Step 4: Simplify right side
    636,236.51x = 205,669,897,278.54
  5. Step 5: Solve for x
    x = 205,669,897,278.54/636,236.51
  6. Step 6: Final answer
    x = 323,260.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.