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Finding the Fourth Proportional to 329,801.20, 494,701.80 and 215,639.80

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Solution

The fourth proportional to 329,801.20, 494,701.80 and 215,639.80 is: 323,459.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,801.20 : 494,701.80 = 215,639.80 : x
  2. Step 2: Convert to fraction form
    329,801.20/494,701.80 = 215,639.80/x
  3. Step 3: Cross multiply
    329,801.20x = 494,701.80 × 215,639.80
  4. Step 4: Simplify right side
    329,801.20x = 106,677,397,211.64
  5. Step 5: Solve for x
    x = 106,677,397,211.64/329,801.20
  6. Step 6: Final answer
    x = 323,459.70

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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.