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Finding the Fourth Proportional to 330,900.80, 495,765.60 and 319,937.60

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Solution

The fourth proportional to 330,900.80, 495,765.60 and 319,937.60 is: 479,340.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,900.80 : 495,765.60 = 319,937.60 : x
  2. Step 2: Convert to fraction form
    330,900.80/495,765.60 = 319,937.60/x
  3. Step 3: Cross multiply
    330,900.80x = 495,765.60 × 319,937.60
  4. Step 4: Simplify right side
    330,900.80x = 158,614,056,226.56
  5. Step 5: Solve for x
    x = 158,614,056,226.56/330,900.80
  6. Step 6: Final answer
    x = 479,340.20

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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.