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Finding the Fourth Proportional to 489,119.12, 733,679.76 and 134,138.24

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Solution

The fourth proportional to 489,119.12, 733,679.76 and 134,138.24 is: 201,207.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,119.12 : 733,679.76 = 134,138.24 : x
  2. Step 2: Convert to fraction form
    489,119.12/733,679.76 = 134,138.24/x
  3. Step 3: Cross multiply
    489,119.12x = 733,679.76 × 134,138.24
  4. Step 4: Simplify right side
    489,119.12x = 98,414,511,730.02
  5. Step 5: Solve for x
    x = 98,414,511,730.02/489,119.12
  6. Step 6: Final answer
    x = 201,207.66

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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.