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Finding the Fourth Proportional to 230,720.80, 346,081.20 and 191,840.80

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Solution

The fourth proportional to 230,720.80, 346,081.20 and 191,840.80 is: 287,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,720.80 : 346,081.20 = 191,840.80 : x
  2. Step 2: Convert to fraction form
    230,720.80/346,081.20 = 191,840.80/x
  3. Step 3: Cross multiply
    230,720.80x = 346,081.20 × 191,840.80
  4. Step 4: Simplify right side
    230,720.80x = 66,392,494,272.96
  5. Step 5: Solve for x
    x = 66,392,494,272.96/230,720.80
  6. Step 6: Final answer
    x = 287,761.20

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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.