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Finding the Fourth Proportional to 215,263.80, 322,720.74 and 75,120.84

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Solution

The fourth proportional to 215,263.80, 322,720.74 and 75,120.84 is: 112,620.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,263.80 : 322,720.74 = 75,120.84 : x
  2. Step 2: Convert to fraction form
    215,263.80/322,720.74 = 75,120.84/x
  3. Step 3: Cross multiply
    215,263.80x = 322,720.74 × 75,120.84
  4. Step 4: Simplify right side
    215,263.80x = 24,243,053,074.22
  5. Step 5: Solve for x
    x = 24,243,053,074.22/215,263.80
  6. Step 6: Final answer
    x = 112,620.20

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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.