Home / 330,097.20-495,145.80-80,779.20

Finding the Fourth Proportional to 330,097.20, 495,145.80 and 80,779.20

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Solution

The fourth proportional to 330,097.20, 495,145.80 and 80,779.20 is: 121,168.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,097.20 : 495,145.80 = 80,779.20 : x
  2. Step 2: Convert to fraction form
    330,097.20/495,145.80 = 80,779.20/x
  3. Step 3: Cross multiply
    330,097.20x = 495,145.80 × 80,779.20
  4. Step 4: Simplify right side
    330,097.20x = 39,997,481,607.36
  5. Step 5: Solve for x
    x = 39,997,481,607.36/330,097.20
  6. Step 6: Final answer
    x = 121,168.80

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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.