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Finding the Fourth Proportional to 230,130.56, 345,278.64 and 80,392.88

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Solution

The fourth proportional to 230,130.56, 345,278.64 and 80,392.88 is: 120,618.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,130.56 : 345,278.64 = 80,392.88 : x
  2. Step 2: Convert to fraction form
    230,130.56/345,278.64 = 80,392.88/x
  3. Step 3: Cross multiply
    230,130.56x = 345,278.64 × 80,392.88
  4. Step 4: Simplify right side
    230,130.56x = 27,757,944,272.08
  5. Step 5: Solve for x
    x = 27,757,944,272.08/230,130.56
  6. Step 6: Final answer
    x = 120,618.25

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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.