Home / 389,985.20-584,903.82-190,104.56

Finding the Fourth Proportional to 389,985.20, 584,903.82 and 190,104.56

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Solution

The fourth proportional to 389,985.20, 584,903.82 and 190,104.56 is: 285,120.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,985.20 : 584,903.82 = 190,104.56 : x
  2. Step 2: Convert to fraction form
    389,985.20/584,903.82 = 190,104.56/x
  3. Step 3: Cross multiply
    389,985.20x = 584,903.82 × 190,104.56
  4. Step 4: Simplify right side
    389,985.20x = 111,192,883,343.42
  5. Step 5: Solve for x
    x = 111,192,883,343.42/389,985.20
  6. Step 6: Final answer
    x = 285,120.78

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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.