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Finding the Fourth Proportional to 223,281.20, 308,105.79 and 126,465.70

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Solution

The fourth proportional to 223,281.20, 308,105.79 and 126,465.70 is: 174,510.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,281.20 : 308,105.79 = 126,465.70 : x
  2. Step 2: Convert to fraction form
    223,281.20/308,105.79 = 126,465.70/x
  3. Step 3: Cross multiply
    223,281.20x = 308,105.79 × 126,465.70
  4. Step 4: Simplify right side
    223,281.20x = 38,964,814,406.40
  5. Step 5: Solve for x
    x = 38,964,814,406.40/223,281.20
  6. Step 6: Final answer
    x = 174,510.05

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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.