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Finding the Fourth Proportional to 330,385.32, 495,654.39 and 117,141.93

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Solution

The fourth proportional to 330,385.32, 495,654.39 and 117,141.93 is: 175,739.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,385.32 : 495,654.39 = 117,141.93 : x
  2. Step 2: Convert to fraction form
    330,385.32/495,654.39 = 117,141.93/x
  3. Step 3: Cross multiply
    330,385.32x = 495,654.39 × 117,141.93
  4. Step 4: Simplify right side
    330,385.32x = 58,061,911,857.57
  5. Step 5: Solve for x
    x = 58,061,911,857.57/330,385.32
  6. Step 6: Final answer
    x = 175,739.99

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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.