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Finding the Fourth Proportional to 291,735, 437,676.44 and 81,372.96

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Solution

The fourth proportional to 291,735, 437,676.44 and 81,372.96 is: 122,080.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,735 : 437,676.44 = 81,372.96 : x
  2. Step 2: Convert to fraction form
    291,735/437,676.44 = 81,372.96/x
  3. Step 3: Cross multiply
    291,735x = 437,676.44 × 81,372.96
  4. Step 4: Simplify right side
    291,735x = 35,615,027,038.20
  5. Step 5: Solve for x
    x = 35,615,027,038.20/291,735
  6. Step 6: Final answer
    x = 122,080.06

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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.