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Finding the Fourth Proportional to 665,074.53, 997,759.40 and 191,722.95

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Solution

The fourth proportional to 665,074.53, 997,759.40 and 191,722.95 is: 287,626.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,074.53 : 997,759.40 = 191,722.95 : x
  2. Step 2: Convert to fraction form
    665,074.53/997,759.40 = 191,722.95/x
  3. Step 3: Cross multiply
    665,074.53x = 997,759.40 × 191,722.95
  4. Step 4: Simplify right side
    665,074.53x = 191,293,374,599.62
  5. Step 5: Solve for x
    x = 191,293,374,599.62/665,074.53
  6. Step 6: Final answer
    x = 287,626.97

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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.