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Finding the Fourth Proportional to 225,688.86, 311,439.06 and 130,189.86

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Solution

The fourth proportional to 225,688.86, 311,439.06 and 130,189.86 is: 179,655.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,688.86 : 311,439.06 = 130,189.86 : x
  2. Step 2: Convert to fraction form
    225,688.86/311,439.06 = 130,189.86/x
  3. Step 3: Cross multiply
    225,688.86x = 311,439.06 × 130,189.86
  4. Step 4: Simplify right side
    225,688.86x = 40,546,207,619.93
  5. Step 5: Solve for x
    x = 40,546,207,619.93/225,688.86
  6. Step 6: Final answer
    x = 179,655.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.