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Finding the Fourth Proportional to 225,402.99, 311,059.95 and 123,426.83

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Solution

The fourth proportional to 225,402.99, 311,059.95 and 123,426.83 is: 170,331.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,402.99 : 311,059.95 = 123,426.83 : x
  2. Step 2: Convert to fraction form
    225,402.99/311,059.95 = 123,426.83/x
  3. Step 3: Cross multiply
    225,402.99x = 311,059.95 × 123,426.83
  4. Step 4: Simplify right side
    225,402.99x = 38,393,143,568.46
  5. Step 5: Solve for x
    x = 38,393,143,568.46/225,402.99
  6. Step 6: Final answer
    x = 170,331.12

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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.