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Finding the Fourth Proportional to 291,808.10, 437,906.55 and 133,955.30

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Solution

The fourth proportional to 291,808.10, 437,906.55 and 133,955.30 is: 201,022.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,808.10 : 437,906.55 = 133,955.30 : x
  2. Step 2: Convert to fraction form
    291,808.10/437,906.55 = 133,955.30/x
  3. Step 3: Cross multiply
    291,808.10x = 437,906.55 × 133,955.30
  4. Step 4: Simplify right side
    291,808.10x = 58,659,903,277.22
  5. Step 5: Solve for x
    x = 58,659,903,277.22/291,808.10
  6. Step 6: Final answer
    x = 201,022.19

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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.