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Finding the Fourth Proportional to 330,133.73, 495,200.63 and 172,325.28

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Solution

The fourth proportional to 330,133.73, 495,200.63 and 172,325.28 is: 258,487.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,133.73 : 495,200.63 = 172,325.28 : x
  2. Step 2: Convert to fraction form
    330,133.73/495,200.63 = 172,325.28/x
  3. Step 3: Cross multiply
    330,133.73x = 495,200.63 × 172,325.28
  4. Step 4: Simplify right side
    330,133.73x = 85,335,587,651.74
  5. Step 5: Solve for x
    x = 85,335,587,651.74/330,133.73
  6. Step 6: Final answer
    x = 258,487.94

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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.