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Finding the Fourth Proportional to 256,884.93, 385,231.82 and 88,357.95

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Solution

The fourth proportional to 256,884.93, 385,231.82 and 88,357.95 is: 132,504.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,884.93 : 385,231.82 = 88,357.95 : x
  2. Step 2: Convert to fraction form
    256,884.93/385,231.82 = 88,357.95/x
  3. Step 3: Cross multiply
    256,884.93x = 385,231.82 × 88,357.95
  4. Step 4: Simplify right side
    256,884.93x = 34,038,293,448.18
  5. Step 5: Solve for x
    x = 34,038,293,448.18/256,884.93
  6. Step 6: Final answer
    x = 132,504.05

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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.