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Finding the Fourth Proportional to 257,272.75, 385,903.54 and 88,787.41

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Solution

The fourth proportional to 257,272.75, 385,903.54 and 88,787.41 is: 133,179.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,272.75 : 385,903.54 = 88,787.41 : x
  2. Step 2: Convert to fraction form
    257,272.75/385,903.54 = 88,787.41/x
  3. Step 3: Cross multiply
    257,272.75x = 385,903.54 × 88,787.41
  4. Step 4: Simplify right side
    257,272.75x = 34,263,373,452.98
  5. Step 5: Solve for x
    x = 34,263,373,452.98/257,272.75
  6. Step 6: Final answer
    x = 133,179.18

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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.