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Finding the Fourth Proportional to 330,239.49, 495,203.10 and 127,930.35

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Solution

The fourth proportional to 330,239.49, 495,203.10 and 127,930.35 is: 191,835.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,239.49 : 495,203.10 = 127,930.35 : x
  2. Step 2: Convert to fraction form
    330,239.49/495,203.10 = 127,930.35/x
  3. Step 3: Cross multiply
    330,239.49x = 495,203.10 × 127,930.35
  4. Step 4: Simplify right side
    330,239.49x = 63,351,505,904.09
  5. Step 5: Solve for x
    x = 63,351,505,904.09/330,239.49
  6. Step 6: Final answer
    x = 191,835.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.