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Finding the Fourth Proportional to 221,797.20, 306,079.80 and 126,303.93

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Solution

The fourth proportional to 221,797.20, 306,079.80 and 126,303.93 is: 174,299.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,797.20 : 306,079.80 = 126,303.93 : x
  2. Step 2: Convert to fraction form
    221,797.20/306,079.80 = 126,303.93/x
  3. Step 3: Cross multiply
    221,797.20x = 306,079.80 × 126,303.93
  4. Step 4: Simplify right side
    221,797.20x = 38,659,081,633.61
  5. Step 5: Solve for x
    x = 38,659,081,633.61/221,797.20
  6. Step 6: Final answer
    x = 174,299.23

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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.