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Finding the Fourth Proportional to 291,755.34, 437,706.81 and 81,393.12

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Solution

The fourth proportional to 291,755.34, 437,706.81 and 81,393.12 is: 122,110.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,755.34 : 437,706.81 = 81,393.12 : x
  2. Step 2: Convert to fraction form
    291,755.34/437,706.81 = 81,393.12/x
  3. Step 3: Cross multiply
    291,755.34x = 437,706.81 × 81,393.12
  4. Step 4: Simplify right side
    291,755.34x = 35,626,322,911.15
  5. Step 5: Solve for x
    x = 35,626,322,911.15/291,755.34
  6. Step 6: Final answer
    x = 122,110.27

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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.