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Finding the Fourth Proportional to 389,797.82, 537,920.98 and 210,949.82

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Solution

The fourth proportional to 389,797.82, 537,920.98 and 210,949.82 is: 291,110.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,797.82 : 537,920.98 = 210,949.82 : x
  2. Step 2: Convert to fraction form
    389,797.82/537,920.98 = 210,949.82/x
  3. Step 3: Cross multiply
    389,797.82x = 537,920.98 × 210,949.82
  4. Step 4: Simplify right side
    389,797.82x = 113,474,331,215.62
  5. Step 5: Solve for x
    x = 113,474,331,215.62/389,797.82
  6. Step 6: Final answer
    x = 291,110.74

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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.