Home / 505,785.20-758,677.80-131,808.20

Finding the Fourth Proportional to 505,785.20, 758,677.80 and 131,808.20

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Solution

The fourth proportional to 505,785.20, 758,677.80 and 131,808.20 is: 197,712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,785.20 : 758,677.80 = 131,808.20 : x
  2. Step 2: Convert to fraction form
    505,785.20/758,677.80 = 131,808.20/x
  3. Step 3: Cross multiply
    505,785.20x = 758,677.80 × 131,808.20
  4. Step 4: Simplify right side
    505,785.20x = 99,999,955,197.96
  5. Step 5: Solve for x
    x = 99,999,955,197.96/505,785.20
  6. Step 6: Final answer
    x = 197,712.30

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Similar ratio
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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.