Home / 389,826.75-537,961.22-210,978.75

Finding the Fourth Proportional to 389,826.75, 537,961.22 and 210,978.75

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Solution

The fourth proportional to 389,826.75, 537,961.22 and 210,978.75 is: 291,150.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,826.75 : 537,961.22 = 210,978.75 : x
  2. Step 2: Convert to fraction form
    389,826.75/537,961.22 = 210,978.75/x
  3. Step 3: Cross multiply
    389,826.75x = 537,961.22 × 210,978.75
  4. Step 4: Simplify right side
    389,826.75x = 113,498,385,744.08
  5. Step 5: Solve for x
    x = 113,498,385,744.08/389,826.75
  6. Step 6: Final answer
    x = 291,150.84

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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.