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Finding the Fourth Proportional to 521,981.70, 782,988.84 and 248,367.98

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Solution

The fourth proportional to 521,981.70, 782,988.84 and 248,367.98 is: 372,559.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,981.70 : 782,988.84 = 248,367.98 : x
  2. Step 2: Convert to fraction form
    521,981.70/782,988.84 = 248,367.98/x
  3. Step 3: Cross multiply
    521,981.70x = 782,988.84 × 248,367.98
  4. Step 4: Simplify right side
    521,981.70x = 194,469,356,553.34
  5. Step 5: Solve for x
    x = 194,469,356,553.34/521,981.70
  6. Step 6: Final answer
    x = 372,559.72

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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.