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Finding the Fourth Proportional to 505,783.10, 758,674.65 and 131,806.10

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Solution

The fourth proportional to 505,783.10, 758,674.65 and 131,806.10 is: 197,709.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,783.10 : 758,674.65 = 131,806.10 : x
  2. Step 2: Convert to fraction form
    505,783.10/758,674.65 = 131,806.10/x
  3. Step 3: Cross multiply
    505,783.10x = 758,674.65 × 131,806.10
  4. Step 4: Simplify right side
    505,783.10x = 99,997,946,785.37
  5. Step 5: Solve for x
    x = 99,997,946,785.37/505,783.10
  6. Step 6: Final answer
    x = 197,709.15

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Double scale
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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.