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Finding the Fourth Proportional to 489,396.87, 734,093.82 and 134,411.20

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Solution

The fourth proportional to 489,396.87, 734,093.82 and 134,411.20 is: 201,616.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,396.87 : 734,093.82 = 134,411.20 : x
  2. Step 2: Convert to fraction form
    489,396.87/734,093.82 = 134,411.20/x
  3. Step 3: Cross multiply
    489,396.87x = 734,093.82 × 134,411.20
  4. Step 4: Simplify right side
    489,396.87x = 98,670,429,423.55
  5. Step 5: Solve for x
    x = 98,670,429,423.55/489,396.87
  6. Step 6: Final answer
    x = 201,616.39

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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.