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Finding the Fourth Proportional to 636,245.02, 954,342.60 and 215,520.88

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Solution

The fourth proportional to 636,245.02, 954,342.60 and 215,520.88 is: 323,272.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,245.02 : 954,342.60 = 215,520.88 : x
  2. Step 2: Convert to fraction form
    636,245.02/954,342.60 = 215,520.88/x
  3. Step 3: Cross multiply
    636,245.02x = 954,342.60 × 215,520.88
  4. Step 4: Simplify right side
    636,245.02x = 205,680,756,973.49
  5. Step 5: Solve for x
    x = 205,680,756,973.49/636,245.02
  6. Step 6: Final answer
    x = 323,272.88

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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.