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Finding the Fourth Proportional to 225,619.20, 311,332.80 and 134,956.80

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Solution

The fourth proportional to 225,619.20, 311,332.80 and 134,956.80 is: 186,227.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,619.20 : 311,332.80 = 134,956.80 : x
  2. Step 2: Convert to fraction form
    225,619.20/311,332.80 = 134,956.80/x
  3. Step 3: Cross multiply
    225,619.20x = 311,332.80 × 134,956.80
  4. Step 4: Simplify right side
    225,619.20x = 42,016,478,423.04
  5. Step 5: Solve for x
    x = 42,016,478,423.04/225,619.20
  6. Step 6: Final answer
    x = 186,227.41

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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.