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Finding the Fourth Proportional to 505,046.80, 696,960.21 and 275,608.63

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Solution

The fourth proportional to 505,046.80, 696,960.21 and 275,608.63 is: 380,337.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,046.80 : 696,960.21 = 275,608.63 : x
  2. Step 2: Convert to fraction form
    505,046.80/696,960.21 = 275,608.63/x
  3. Step 3: Cross multiply
    505,046.80x = 696,960.21 × 275,608.63
  4. Step 4: Simplify right side
    505,046.80x = 192,088,248,642.61
  5. Step 5: Solve for x
    x = 192,088,248,642.61/505,046.80
  6. Step 6: Final answer
    x = 380,337.52

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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.