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Finding the Fourth Proportional to 312,768.88, 469,155.16 and 88,131.20

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Solution

The fourth proportional to 312,768.88, 469,155.16 and 88,131.20 is: 132,197.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,768.88 : 469,155.16 = 88,131.20 : x
  2. Step 2: Convert to fraction form
    312,768.88/469,155.16 = 88,131.20/x
  3. Step 3: Cross multiply
    312,768.88x = 469,155.16 × 88,131.20
  4. Step 4: Simplify right side
    312,768.88x = 41,347,207,236.99
  5. Step 5: Solve for x
    x = 41,347,207,236.99/312,768.88
  6. Step 6: Final answer
    x = 132,197.32

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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.