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Finding the Fourth Proportional to 445,835.70, 668,753.55 and 268,251.30

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Solution

The fourth proportional to 445,835.70, 668,753.55 and 268,251.30 is: 402,376.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,835.70 : 668,753.55 = 268,251.30 : x
  2. Step 2: Convert to fraction form
    445,835.70/668,753.55 = 268,251.30/x
  3. Step 3: Cross multiply
    445,835.70x = 668,753.55 × 268,251.30
  4. Step 4: Simplify right side
    445,835.70x = 179,394,009,167.12
  5. Step 5: Solve for x
    x = 179,394,009,167.12/445,835.70
  6. Step 6: Final answer
    x = 402,376.95

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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.