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Finding the Fourth Proportional to 316,794.72, 475,147.44 and 80,122.80

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Solution

The fourth proportional to 316,794.72, 475,147.44 and 80,122.80 is: 120,172.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,794.72 : 475,147.44 = 80,122.80 : x
  2. Step 2: Convert to fraction form
    316,794.72/475,147.44 = 80,122.80/x
  3. Step 3: Cross multiply
    316,794.72x = 475,147.44 × 80,122.80
  4. Step 4: Simplify right side
    316,794.72x = 38,070,143,305.63
  5. Step 5: Solve for x
    x = 38,070,143,305.63/316,794.72
  6. Step 6: Final answer
    x = 120,172.91

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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.