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Finding the Fourth Proportional to 331,729.67, 457,784.55 and 188,489.71

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Solution

The fourth proportional to 331,729.67, 457,784.55 and 188,489.71 is: 260,114.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,729.67 : 457,784.55 = 188,489.71 : x
  2. Step 2: Convert to fraction form
    331,729.67/457,784.55 = 188,489.71/x
  3. Step 3: Cross multiply
    331,729.67x = 457,784.55 × 188,489.71
  4. Step 4: Simplify right side
    331,729.67x = 86,287,677,071.98
  5. Step 5: Solve for x
    x = 86,287,677,071.98/331,729.67
  6. Step 6: Final answer
    x = 260,114.44

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1.5x scale

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.