Home / 389,910.20-584,865.30-109,427.45

Finding the Fourth Proportional to 389,910.20, 584,865.30 and 109,427.45

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Solution

The fourth proportional to 389,910.20, 584,865.30 and 109,427.45 is: 164,141.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,910.20 : 584,865.30 = 109,427.45 : x
  2. Step 2: Convert to fraction form
    389,910.20/584,865.30 = 109,427.45/x
  3. Step 3: Cross multiply
    389,910.20x = 584,865.30 × 109,427.45
  4. Step 4: Simplify right side
    389,910.20x = 64,000,318,372.49
  5. Step 5: Solve for x
    x = 64,000,318,372.49/389,910.20
  6. Step 6: Final answer
    x = 164,141.18

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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.