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Finding the Fourth Proportional to 489,012.55, 733,440.12 and 133,943.53

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Solution

The fourth proportional to 489,012.55, 733,440.12 and 133,943.53 is: 200,893.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,012.55 : 733,440.12 = 133,943.53 : x
  2. Step 2: Convert to fraction form
    489,012.55/733,440.12 = 133,943.53/x
  3. Step 3: Cross multiply
    489,012.55x = 733,440.12 × 133,943.53
  4. Step 4: Simplify right side
    489,012.55x = 98,239,558,716.42
  5. Step 5: Solve for x
    x = 98,239,558,716.42/489,012.55
  6. Step 6: Final answer
    x = 200,893.74

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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.