Home / 389,981.17-584,992.68-109,520.29

Finding the Fourth Proportional to 389,981.17, 584,992.68 and 109,520.29

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Solution

The fourth proportional to 389,981.17, 584,992.68 and 109,520.29 is: 164,286.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,981.17 : 584,992.68 = 109,520.29 : x
  2. Step 2: Convert to fraction form
    389,981.17/584,992.68 = 109,520.29/x
  3. Step 3: Cross multiply
    389,981.17x = 584,992.68 × 109,520.29
  4. Step 4: Simplify right side
    389,981.17x = 64,068,567,961.48
  5. Step 5: Solve for x
    x = 64,068,567,961.48/389,981.17
  6. Step 6: Final answer
    x = 164,286.31

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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.