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Finding the Fourth Proportional to 330,369.30, 495,553.95 and 274,321.35

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Solution

The fourth proportional to 330,369.30, 495,553.95 and 274,321.35 is: 411,482.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,369.30 : 495,553.95 = 274,321.35 : x
  2. Step 2: Convert to fraction form
    330,369.30/495,553.95 = 274,321.35/x
  3. Step 3: Cross multiply
    330,369.30x = 495,553.95 × 274,321.35
  4. Step 4: Simplify right side
    330,369.30x = 135,941,028,561.83
  5. Step 5: Solve for x
    x = 135,941,028,561.83/330,369.30
  6. Step 6: Final answer
    x = 411,482.03

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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.