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Finding the Fourth Proportional to 329,179.20, 493,768.80 and 289,780.80

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Solution

The fourth proportional to 329,179.20, 493,768.80 and 289,780.80 is: 434,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,179.20 : 493,768.80 = 289,780.80 : x
  2. Step 2: Convert to fraction form
    329,179.20/493,768.80 = 289,780.80/x
  3. Step 3: Cross multiply
    329,179.20x = 493,768.80 × 289,780.80
  4. Step 4: Simplify right side
    329,179.20x = 143,084,717,879.04
  5. Step 5: Solve for x
    x = 143,084,717,879.04/329,179.20
  6. Step 6: Final answer
    x = 434,671.20

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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.