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Finding the Fourth Proportional to 636,632.64, 955,066.82 and 210,198.17

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Solution

The fourth proportional to 636,632.64, 955,066.82 and 210,198.17 is: 315,336.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,632.64 : 955,066.82 = 210,198.17 : x
  2. Step 2: Convert to fraction form
    636,632.64/955,066.82 = 210,198.17/x
  3. Step 3: Cross multiply
    636,632.64x = 955,066.82 × 210,198.17
  4. Step 4: Simplify right side
    636,632.64x = 200,753,291,965.39
  5. Step 5: Solve for x
    x = 200,753,291,965.39/636,632.64
  6. Step 6: Final answer
    x = 315,336.16

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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.