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Finding the Fourth Proportional to 316,900.33, 475,351.58 and 80,242.90

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Solution

The fourth proportional to 316,900.33, 475,351.58 and 80,242.90 is: 120,364.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,900.33 : 475,351.58 = 80,242.90 : x
  2. Step 2: Convert to fraction form
    316,900.33/475,351.58 = 80,242.90/x
  3. Step 3: Cross multiply
    316,900.33x = 475,351.58 × 80,242.90
  4. Step 4: Simplify right side
    316,900.33x = 38,143,589,298.78
  5. Step 5: Solve for x
    x = 38,143,589,298.78/316,900.33
  6. Step 6: Final answer
    x = 120,364.62

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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.