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Finding the Fourth Proportional to 505,003.62, 696,921.80 and 275,573.49

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Solution

The fourth proportional to 505,003.62, 696,921.80 and 275,573.49 is: 380,300.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,003.62 : 696,921.80 = 275,573.49 : x
  2. Step 2: Convert to fraction form
    505,003.62/696,921.80 = 275,573.49/x
  3. Step 3: Cross multiply
    505,003.62x = 696,921.80 × 275,573.49
  4. Step 4: Simplify right side
    505,003.62x = 192,053,168,691.76
  5. Step 5: Solve for x
    x = 192,053,168,691.76/505,003.62
  6. Step 6: Final answer
    x = 380,300.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.