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Finding the Fourth Proportional to 330,164.10, 495,246.15 and 172,440.90

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Solution

The fourth proportional to 330,164.10, 495,246.15 and 172,440.90 is: 258,661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,164.10 : 495,246.15 = 172,440.90 : x
  2. Step 2: Convert to fraction form
    330,164.10/495,246.15 = 172,440.90/x
  3. Step 3: Cross multiply
    330,164.10x = 495,246.15 × 172,440.90
  4. Step 4: Simplify right side
    330,164.10x = 85,400,691,827.54
  5. Step 5: Solve for x
    x = 85,400,691,827.54/330,164.10
  6. Step 6: Final answer
    x = 258,661.35

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1.5x scale

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.