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Finding the Fourth Proportional to 330,779.60, 496,015.80 and 143,694.80

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Solution

The fourth proportional to 330,779.60, 496,015.80 and 143,694.80 is: 215,475.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,779.60 : 496,015.80 = 143,694.80 : x
  2. Step 2: Convert to fraction form
    330,779.60/496,015.80 = 143,694.80/x
  3. Step 3: Cross multiply
    330,779.60x = 496,015.80 × 143,694.80
  4. Step 4: Simplify right side
    330,779.60x = 71,274,891,177.84
  5. Step 5: Solve for x
    x = 71,274,891,177.84/330,779.60
  6. Step 6: Final answer
    x = 215,475.47

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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.