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Finding the Fourth Proportional to 331,656.69, 457,687.76 and 188,424.59

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Solution

The fourth proportional to 331,656.69, 457,687.76 and 188,424.59 is: 260,026.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,656.69 : 457,687.76 = 188,424.59 : x
  2. Step 2: Convert to fraction form
    331,656.69/457,687.76 = 188,424.59/x
  3. Step 3: Cross multiply
    331,656.69x = 457,687.76 × 188,424.59
  4. Step 4: Simplify right side
    331,656.69x = 86,239,625,295.46
  5. Step 5: Solve for x
    x = 86,239,625,295.46/331,656.69
  6. Step 6: Final answer
    x = 260,026.79

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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.