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Finding the Fourth Proportional to 489,524.87, 734,268.85 and 134,529.66

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Solution

The fourth proportional to 489,524.87, 734,268.85 and 134,529.66 is: 201,789.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,524.87 : 734,268.85 = 134,529.66 : x
  2. Step 2: Convert to fraction form
    489,524.87/734,268.85 = 134,529.66/x
  3. Step 3: Cross multiply
    489,524.87x = 734,268.85 × 134,529.66
  4. Step 4: Simplify right side
    489,524.87x = 98,780,938,402.77
  5. Step 5: Solve for x
    x = 98,780,938,402.77/489,524.87
  6. Step 6: Final answer
    x = 201,789.42

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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.