Home / 521,046.15-781,160.93-205,739.07

Finding the Fourth Proportional to 521,046.15, 781,160.93 and 205,739.07

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Solution

The fourth proportional to 521,046.15, 781,160.93 and 205,739.07 is: 308,447.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,046.15 : 781,160.93 = 205,739.07 : x
  2. Step 2: Convert to fraction form
    521,046.15/781,160.93 = 205,739.07/x
  3. Step 3: Cross multiply
    521,046.15x = 781,160.93 × 205,739.07
  4. Step 4: Simplify right side
    521,046.15x = 160,715,322,229.84
  5. Step 5: Solve for x
    x = 160,715,322,229.84/521,046.15
  6. Step 6: Final answer
    x = 308,447.38

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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.