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Finding the Fourth Proportional to 491,527.85, 678,310.00 and 276,671.30

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Solution

The fourth proportional to 491,527.85, 678,310.00 and 276,671.30 is: 381,807.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,527.85 : 678,310.00 = 276,671.30 : x
  2. Step 2: Convert to fraction form
    491,527.85/678,310.00 = 276,671.30/x
  3. Step 3: Cross multiply
    491,527.85x = 678,310.00 × 276,671.30
  4. Step 4: Simplify right side
    491,527.85x = 187,668,905,419.77
  5. Step 5: Solve for x
    x = 187,668,905,419.77/491,527.85
  6. Step 6: Final answer
    x = 381,807.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.