Home / 389,996.80-584,822.40-179,699.20

Finding the Fourth Proportional to 389,996.80, 584,822.40 and 179,699.20

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Solution

The fourth proportional to 389,996.80, 584,822.40 and 179,699.20 is: 269,469.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,996.80 : 584,822.40 = 179,699.20 : x
  2. Step 2: Convert to fraction form
    389,996.80/584,822.40 = 179,699.20/x
  3. Step 3: Cross multiply
    389,996.80x = 584,822.40 × 179,699.20
  4. Step 4: Simplify right side
    389,996.80x = 105,092,117,422.08
  5. Step 5: Solve for x
    x = 105,092,117,422.08/389,996.80
  6. Step 6: Final answer
    x = 269,469.18

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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.