Home / 205,918.48-308,440.32-117,126.28

Finding the Fourth Proportional to 205,918.48, 308,440.32 and 117,126.28

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Solution

The fourth proportional to 205,918.48, 308,440.32 and 117,126.28 is: 175,440.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,918.48 : 308,440.32 = 117,126.28 : x
  2. Step 2: Convert to fraction form
    205,918.48/308,440.32 = 117,126.28/x
  3. Step 3: Cross multiply
    205,918.48x = 308,440.32 × 117,126.28
  4. Step 4: Simplify right side
    205,918.48x = 36,126,467,283.61
  5. Step 5: Solve for x
    x = 36,126,467,283.61/205,918.48
  6. Step 6: Final answer
    x = 175,440.63

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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.