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Finding the Fourth Proportional to 636,009.14, 954,057.87 and 215,142.74

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Solution

The fourth proportional to 636,009.14, 954,057.87 and 215,142.74 is: 322,729.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,009.14 : 954,057.87 = 215,142.74 : x
  2. Step 2: Convert to fraction form
    636,009.14/954,057.87 = 215,142.74/x
  3. Step 3: Cross multiply
    636,009.14x = 954,057.87 × 215,142.74
  4. Step 4: Simplify right side
    636,009.14x = 205,258,624,270.36
  5. Step 5: Solve for x
    x = 205,258,624,270.36/636,009.14
  6. Step 6: Final answer
    x = 322,729.05

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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.