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Finding the Fourth Proportional to 255,079.56, 382,455.24 and 121,956.84

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Solution

The fourth proportional to 255,079.56, 382,455.24 and 121,956.84 is: 182,856.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,079.56 : 382,455.24 = 121,956.84 : x
  2. Step 2: Convert to fraction form
    255,079.56/382,455.24 = 121,956.84/x
  3. Step 3: Cross multiply
    255,079.56x = 382,455.24 × 121,956.84
  4. Step 4: Simplify right side
    255,079.56x = 46,643,032,511.84
  5. Step 5: Solve for x
    x = 46,643,032,511.84/255,079.56
  6. Step 6: Final answer
    x = 182,856.80

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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.