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Finding the Fourth Proportional to 256,297.88, 384,529.08 and 123,187.79

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Solution

The fourth proportional to 256,297.88, 384,529.08 and 123,187.79 is: 184,821.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,297.88 : 384,529.08 = 123,187.79 : x
  2. Step 2: Convert to fraction form
    256,297.88/384,529.08 = 123,187.79/x
  3. Step 3: Cross multiply
    256,297.88x = 384,529.08 × 123,187.79
  4. Step 4: Simplify right side
    256,297.88x = 47,369,288,979.21
  5. Step 5: Solve for x
    x = 47,369,288,979.21/256,297.88
  6. Step 6: Final answer
    x = 184,821.23

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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.