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Finding the Fourth Proportional to 515,969.25, 773,988 and 136,884.66

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Solution

The fourth proportional to 515,969.25, 773,988 and 136,884.66 is: 205,336.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,969.25 : 773,988 = 136,884.66 : x
  2. Step 2: Convert to fraction form
    515,969.25/773,988 = 136,884.66/x
  3. Step 3: Cross multiply
    515,969.25x = 773,988 × 136,884.66
  4. Step 4: Simplify right side
    515,969.25x = 105,947,084,224.08
  5. Step 5: Solve for x
    x = 105,947,084,224.08/515,969.25
  6. Step 6: Final answer
    x = 205,336.04

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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.