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Finding the Fourth Proportional to 353,460.80, 530,191.20 and 330,132.80

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Solution

The fourth proportional to 353,460.80, 530,191.20 and 330,132.80 is: 495,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,460.80 : 530,191.20 = 330,132.80 : x
  2. Step 2: Convert to fraction form
    353,460.80/530,191.20 = 330,132.80/x
  3. Step 3: Cross multiply
    353,460.80x = 530,191.20 × 330,132.80
  4. Step 4: Simplify right side
    353,460.80x = 175,033,505,391.36
  5. Step 5: Solve for x
    x = 175,033,505,391.36/353,460.80
  6. Step 6: Final answer
    x = 495,199.20

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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.