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Finding the Fourth Proportional to 251,281.71, 376,922.57 and 85,056.75

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Solution

The fourth proportional to 251,281.71, 376,922.57 and 85,056.75 is: 127,585.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,281.71 : 376,922.57 = 85,056.75 : x
  2. Step 2: Convert to fraction form
    251,281.71/376,922.57 = 85,056.75/x
  3. Step 3: Cross multiply
    251,281.71x = 376,922.57 × 85,056.75
  4. Step 4: Simplify right side
    251,281.71x = 32,059,808,380.56
  5. Step 5: Solve for x
    x = 32,059,808,380.56/251,281.71
  6. Step 6: Final answer
    x = 127,585.13

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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.