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Finding the Fourth Proportional to 256,739.94, 385,118.69 and 88,258.82

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Solution

The fourth proportional to 256,739.94, 385,118.69 and 88,258.82 is: 132,391.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,739.94 : 385,118.69 = 88,258.82 : x
  2. Step 2: Convert to fraction form
    256,739.94/385,118.69 = 88,258.82/x
  3. Step 3: Cross multiply
    256,739.94x = 385,118.69 × 88,258.82
  4. Step 4: Simplify right side
    256,739.94x = 33,990,118,772.46
  5. Step 5: Solve for x
    x = 33,990,118,772.46/256,739.94
  6. Step 6: Final answer
    x = 132,391.24

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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.