Home / 389,618.44-584,076.78-140,125

Finding the Fourth Proportional to 389,618.44, 584,076.78 and 140,125

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Solution

The fourth proportional to 389,618.44, 584,076.78 and 140,125 is: 210,061.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,618.44 : 584,076.78 = 140,125 : x
  2. Step 2: Convert to fraction form
    389,618.44/584,076.78 = 140,125/x
  3. Step 3: Cross multiply
    389,618.44x = 584,076.78 × 140,125
  4. Step 4: Simplify right side
    389,618.44x = 81,843,758,797.50
  5. Step 5: Solve for x
    x = 81,843,758,797.50/389,618.44
  6. Step 6: Final answer
    x = 210,061.31

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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.