Home / 374,780.40-561,976.20-138,001.20

Finding the Fourth Proportional to 374,780.40, 561,976.20 and 138,001.20

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Solution

The fourth proportional to 374,780.40, 561,976.20 and 138,001.20 is: 206,930.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,780.40 : 561,976.20 = 138,001.20 : x
  2. Step 2: Convert to fraction form
    374,780.40/561,976.20 = 138,001.20/x
  3. Step 3: Cross multiply
    374,780.40x = 561,976.20 × 138,001.20
  4. Step 4: Simplify right side
    374,780.40x = 77,553,389,971.44
  5. Step 5: Solve for x
    x = 77,553,389,971.44/374,780.40
  6. Step 6: Final answer
    x = 206,930.22

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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.