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Finding the Fourth Proportional to 317,648.56, 476,485.80 and 80,997.38

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Solution

The fourth proportional to 317,648.56, 476,485.80 and 80,997.38 is: 121,499.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,648.56 : 476,485.80 = 80,997.38 : x
  2. Step 2: Convert to fraction form
    317,648.56/476,485.80 = 80,997.38/x
  3. Step 3: Cross multiply
    317,648.56x = 476,485.80 × 80,997.38
  4. Step 4: Simplify right side
    317,648.56x = 38,594,101,407.20
  5. Step 5: Solve for x
    x = 38,594,101,407.20/317,648.56
  6. Step 6: Final answer
    x = 121,499.37

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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.