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Finding the Fourth Proportional to 291,628.35, 437,489.64 and 123,174

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Solution

The fourth proportional to 291,628.35, 437,489.64 and 123,174 is: 184,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,628.35 : 437,489.64 = 123,174 : x
  2. Step 2: Convert to fraction form
    291,628.35/437,489.64 = 123,174/x
  3. Step 3: Cross multiply
    291,628.35x = 437,489.64 × 123,174
  4. Step 4: Simplify right side
    291,628.35x = 53,887,348,917.36
  5. Step 5: Solve for x
    x = 53,887,348,917.36/291,628.35
  6. Step 6: Final answer
    x = 184,780.90

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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.