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Finding the Fourth Proportional to 353,432.80, 530,149.20 and 330,104.80

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Solution

The fourth proportional to 353,432.80, 530,149.20 and 330,104.80 is: 495,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,432.80 : 530,149.20 = 330,104.80 : x
  2. Step 2: Convert to fraction form
    353,432.80/530,149.20 = 330,104.80/x
  3. Step 3: Cross multiply
    353,432.80x = 530,149.20 × 330,104.80
  4. Step 4: Simplify right side
    353,432.80x = 175,004,795,636.16
  5. Step 5: Solve for x
    x = 175,004,795,636.16/353,432.80
  6. Step 6: Final answer
    x = 495,157.20

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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.