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Finding the Fourth Proportional to 389,758.53, 537,868.39 and 210,910.53

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Solution

The fourth proportional to 389,758.53, 537,868.39 and 210,910.53 is: 291,057.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,758.53 : 537,868.39 = 210,910.53 : x
  2. Step 2: Convert to fraction form
    389,758.53/537,868.39 = 210,910.53/x
  3. Step 3: Cross multiply
    389,758.53x = 537,868.39 × 210,910.53
  4. Step 4: Simplify right side
    389,758.53x = 113,442,107,205.15
  5. Step 5: Solve for x
    x = 113,442,107,205.15/389,758.53
  6. Step 6: Final answer
    x = 291,057.41

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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.