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Finding the Fourth Proportional to 291,758.10, 437,710.96 and 81,395.88

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Solution

The fourth proportional to 291,758.10, 437,710.96 and 81,395.88 is: 122,114.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,758.10 : 437,710.96 = 81,395.88 : x
  2. Step 2: Convert to fraction form
    291,758.10/437,710.96 = 81,395.88/x
  3. Step 3: Cross multiply
    291,758.10x = 437,710.96 × 81,395.88
  4. Step 4: Simplify right side
    291,758.10x = 35,627,868,774.84
  5. Step 5: Solve for x
    x = 35,627,868,774.84/291,758.10
  6. Step 6: Final answer
    x = 122,114.41

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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.