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Finding the Fourth Proportional to 291,640.56, 437,521.86 and 123,161.28

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Solution

The fourth proportional to 291,640.56, 437,521.86 and 123,161.28 is: 184,767.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,640.56 : 437,521.86 = 123,161.28 : x
  2. Step 2: Convert to fraction form
    291,640.56/437,521.86 = 123,161.28/x
  3. Step 3: Cross multiply
    291,640.56x = 437,521.86 × 123,161.28
  4. Step 4: Simplify right side
    291,640.56x = 53,885,752,305.58
  5. Step 5: Solve for x
    x = 53,885,752,305.58/291,640.56
  6. Step 6: Final answer
    x = 184,767.69

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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.