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Finding the Fourth Proportional to 291,706.88, 437,634.09 and 81,344.88

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Solution

The fourth proportional to 291,706.88, 437,634.09 and 81,344.88 is: 122,037.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,706.88 : 437,634.09 = 81,344.88 : x
  2. Step 2: Convert to fraction form
    291,706.88/437,634.09 = 81,344.88/x
  3. Step 3: Cross multiply
    291,706.88x = 437,634.09 × 81,344.88
  4. Step 4: Simplify right side
    291,706.88x = 35,599,292,534.96
  5. Step 5: Solve for x
    x = 35,599,292,534.96/291,706.88
  6. Step 6: Final answer
    x = 122,037.89

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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.