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Finding the Fourth Proportional to 636,201.54, 954,099.81 and 209,657.87

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Solution

The fourth proportional to 636,201.54, 954,099.81 and 209,657.87 is: 314,420.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,201.54 : 954,099.81 = 209,657.87 : x
  2. Step 2: Convert to fraction form
    636,201.54/954,099.81 = 209,657.87/x
  3. Step 3: Cross multiply
    636,201.54x = 954,099.81 × 209,657.87
  4. Step 4: Simplify right side
    636,201.54x = 200,034,532,739.38
  5. Step 5: Solve for x
    x = 200,034,532,739.38/636,201.54
  6. Step 6: Final answer
    x = 314,420.07

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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.