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Finding the Fourth Proportional to 636,640.64, 954,802.20 and 187,272.08

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Solution

The fourth proportional to 636,640.64, 954,802.20 and 187,272.08 is: 280,861.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,640.64 : 954,802.20 = 187,272.08 : x
  2. Step 2: Convert to fraction form
    636,640.64/954,802.20 = 187,272.08/x
  3. Step 3: Cross multiply
    636,640.64x = 954,802.20 × 187,272.08
  4. Step 4: Simplify right side
    636,640.64x = 178,807,793,982.58
  5. Step 5: Solve for x
    x = 178,807,793,982.58/636,640.64
  6. Step 6: Final answer
    x = 280,861.42

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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.