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Finding the Fourth Proportional to 256,808.58, 354,405.52 and 140,529.86

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Solution

The fourth proportional to 256,808.58, 354,405.52 and 140,529.86 is: 193,936.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,808.58 : 354,405.52 = 140,529.86 : x
  2. Step 2: Convert to fraction form
    256,808.58/354,405.52 = 140,529.86/x
  3. Step 3: Cross multiply
    256,808.58x = 354,405.52 × 140,529.86
  4. Step 4: Simplify right side
    256,808.58x = 49,804,558,108.83
  5. Step 5: Solve for x
    x = 49,804,558,108.83/256,808.58
  6. Step 6: Final answer
    x = 193,936.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.