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Finding the Fourth Proportional to 489,247.56, 733,864.86 and 134,261.28

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Solution

The fourth proportional to 489,247.56, 733,864.86 and 134,261.28 is: 201,390.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,247.56 : 733,864.86 = 134,261.28 : x
  2. Step 2: Convert to fraction form
    489,247.56/733,864.86 = 134,261.28/x
  3. Step 3: Cross multiply
    489,247.56x = 733,864.86 × 134,261.28
  4. Step 4: Simplify right side
    489,247.56x = 98,529,635,450.62
  5. Step 5: Solve for x
    x = 98,529,635,450.62/489,247.56
  6. Step 6: Final answer
    x = 201,390.14

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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.