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Finding the Fourth Proportional to 505,783.70, 758,675.55 and 131,806.70

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Solution

The fourth proportional to 505,783.70, 758,675.55 and 131,806.70 is: 197,710.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,783.70 : 758,675.55 = 131,806.70 : x
  2. Step 2: Convert to fraction form
    505,783.70/758,675.55 = 131,806.70/x
  3. Step 3: Cross multiply
    505,783.70x = 758,675.55 × 131,806.70
  4. Step 4: Simplify right side
    505,783.70x = 99,998,520,616.19
  5. Step 5: Solve for x
    x = 99,998,520,616.19/505,783.70
  6. Step 6: Final answer
    x = 197,710.05

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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.