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Finding the Fourth Proportional to 291,910.08, 437,883.62 and 123,399

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Solution

The fourth proportional to 291,910.08, 437,883.62 and 123,399 is: 185,106.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,910.08 : 437,883.62 = 123,399 : x
  2. Step 2: Convert to fraction form
    291,910.08/437,883.62 = 123,399/x
  3. Step 3: Cross multiply
    291,910.08x = 437,883.62 × 123,399
  4. Step 4: Simplify right side
    291,910.08x = 54,034,400,824.38
  5. Step 5: Solve for x
    x = 54,034,400,824.38/291,910.08
  6. Step 6: Final answer
    x = 185,106.32

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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.