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Finding the Fourth Proportional to 331,668.68, 457,702.85 and 188,428.95

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Solution

The fourth proportional to 331,668.68, 457,702.85 and 188,428.95 is: 260,032.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,668.68 : 457,702.85 = 188,428.95 : x
  2. Step 2: Convert to fraction form
    331,668.68/457,702.85 = 188,428.95/x
  3. Step 3: Cross multiply
    331,668.68x = 457,702.85 × 188,428.95
  4. Step 4: Simplify right side
    331,668.68x = 86,244,467,908.58
  5. Step 5: Solve for x
    x = 86,244,467,908.58/331,668.68
  6. Step 6: Final answer
    x = 260,032.00

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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.