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Finding the Fourth Proportional to 636,419.20, 954,624.48 and 215,991.04

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Solution

The fourth proportional to 636,419.20, 954,624.48 and 215,991.04 is: 323,985.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,419.20 : 954,624.48 = 215,991.04 : x
  2. Step 2: Convert to fraction form
    636,419.20/954,624.48 = 215,991.04/x
  3. Step 3: Cross multiply
    636,419.20x = 954,624.48 × 215,991.04
  4. Step 4: Simplify right side
    636,419.20x = 206,190,334,244.66
  5. Step 5: Solve for x
    x = 206,190,334,244.66/636,419.20
  6. Step 6: Final answer
    x = 323,985.09

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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.