Home / 384,910.56-531,193.68-215,144.64

Finding the Fourth Proportional to 384,910.56, 531,193.68 and 215,144.64

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Solution

The fourth proportional to 384,910.56, 531,193.68 and 215,144.64 is: 296,909.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,910.56 : 531,193.68 = 215,144.64 : x
  2. Step 2: Convert to fraction form
    384,910.56/531,193.68 = 215,144.64/x
  3. Step 3: Cross multiply
    384,910.56x = 531,193.68 × 215,144.64
  4. Step 4: Simplify right side
    384,910.56x = 114,283,473,053.88
  5. Step 5: Solve for x
    x = 114,283,473,053.88/384,910.56
  6. Step 6: Final answer
    x = 296,909.17

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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.