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Finding the Fourth Proportional to 636,638.64, 954,799.20 and 187,270.08

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Solution

The fourth proportional to 636,638.64, 954,799.20 and 187,270.08 is: 280,858.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,638.64 : 954,799.20 = 187,270.08 : x
  2. Step 2: Convert to fraction form
    636,638.64/954,799.20 = 187,270.08/x
  3. Step 3: Cross multiply
    636,638.64x = 954,799.20 × 187,270.08
  4. Step 4: Simplify right side
    636,638.64x = 178,805,322,567.94
  5. Step 5: Solve for x
    x = 178,805,322,567.94/636,638.64
  6. Step 6: Final answer
    x = 280,858.42

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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.