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Finding the Fourth Proportional to 636,308.85, 954,260.42 and 209,765.18

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Solution

The fourth proportional to 636,308.85, 954,260.42 and 209,765.18 is: 314,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,308.85 : 954,260.42 = 209,765.18 : x
  2. Step 2: Convert to fraction form
    636,308.85/954,260.42 = 209,765.18/x
  3. Step 3: Cross multiply
    636,308.85x = 954,260.42 × 209,765.18
  4. Step 4: Simplify right side
    636,308.85x = 200,170,608,768.18
  5. Step 5: Solve for x
    x = 200,170,608,768.18/636,308.85
  6. Step 6: Final answer
    x = 314,580.90

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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.