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Finding the Fourth Proportional to 225,457.92, 311,131.32 and 129,964.08

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Solution

The fourth proportional to 225,457.92, 311,131.32 and 129,964.08 is: 179,350.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,457.92 : 311,131.32 = 129,964.08 : x
  2. Step 2: Convert to fraction form
    225,457.92/311,131.32 = 129,964.08/x
  3. Step 3: Cross multiply
    225,457.92x = 311,131.32 × 129,964.08
  4. Step 4: Simplify right side
    225,457.92x = 40,435,895,762.99
  5. Step 5: Solve for x
    x = 40,435,895,762.99/225,457.92
  6. Step 6: Final answer
    x = 179,350.08

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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.