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Finding the Fourth Proportional to 316,975.80, 475,462.92 and 80,317.80

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Solution

The fourth proportional to 316,975.80, 475,462.92 and 80,317.80 is: 120,476.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,975.80 : 475,462.92 = 80,317.80 : x
  2. Step 2: Convert to fraction form
    316,975.80/475,462.92 = 80,317.80/x
  3. Step 3: Cross multiply
    316,975.80x = 475,462.92 × 80,317.80
  4. Step 4: Simplify right side
    316,975.80x = 38,188,135,715.98
  5. Step 5: Solve for x
    x = 38,188,135,715.98/316,975.80
  6. Step 6: Final answer
    x = 120,476.50

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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.