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Finding the Fourth Proportional to 331,665.80, 457,700.34 and 188,433.69

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Solution

The fourth proportional to 331,665.80, 457,700.34 and 188,433.69 is: 260,039.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,665.80 : 457,700.34 = 188,433.69 : x
  2. Step 2: Convert to fraction form
    331,665.80/457,700.34 = 188,433.69/x
  3. Step 3: Cross multiply
    331,665.80x = 457,700.34 × 188,433.69
  4. Step 4: Simplify right side
    331,665.80x = 86,246,163,980.45
  5. Step 5: Solve for x
    x = 86,246,163,980.45/331,665.80
  6. Step 6: Final answer
    x = 260,039.37

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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.