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Finding the Fourth Proportional to 251,205.79, 376,778.58 and 82,684.21

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Solution

The fourth proportional to 251,205.79, 376,778.58 and 82,684.21 is: 124,016.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,205.79 : 376,778.58 = 82,684.21 : x
  2. Step 2: Convert to fraction form
    251,205.79/376,778.58 = 82,684.21/x
  3. Step 3: Cross multiply
    251,205.79x = 376,778.58 × 82,684.21
  4. Step 4: Simplify right side
    251,205.79x = 31,153,639,232.22
  5. Step 5: Solve for x
    x = 31,153,639,232.22/251,205.79
  6. Step 6: Final answer
    x = 124,016.41

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1.5x scale

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.