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Finding the Fourth Proportional to 445,779.85, 668,667.45 and 108,822.28

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Solution

The fourth proportional to 445,779.85, 668,667.45 and 108,822.28 is: 163,232.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,779.85 : 668,667.45 = 108,822.28 : x
  2. Step 2: Convert to fraction form
    445,779.85/668,667.45 = 108,822.28/x
  3. Step 3: Cross multiply
    445,779.85x = 668,667.45 × 108,822.28
  4. Step 4: Simplify right side
    445,779.85x = 72,765,914,799.12
  5. Step 5: Solve for x
    x = 72,765,914,799.12/445,779.85
  6. Step 6: Final answer
    x = 163,232.85

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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.