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Finding the Fourth Proportional to 331,651.87, 457,681.12 and 188,419.77

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Solution

The fourth proportional to 331,651.87, 457,681.12 and 188,419.77 is: 260,020.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,651.87 : 457,681.12 = 188,419.77 : x
  2. Step 2: Convert to fraction form
    331,651.87/457,681.12 = 188,419.77/x
  3. Step 3: Cross multiply
    331,651.87x = 457,681.12 × 188,419.77
  4. Step 4: Simplify right side
    331,651.87x = 86,236,170,892.69
  5. Step 5: Solve for x
    x = 86,236,170,892.69/331,651.87
  6. Step 6: Final answer
    x = 260,020.16

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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.