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Finding the Fourth Proportional to 362,869.75, 500,021.75 and 280,698.79

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Solution

The fourth proportional to 362,869.75, 500,021.75 and 280,698.79 is: 386,793.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,869.75 : 500,021.75 = 280,698.79 : x
  2. Step 2: Convert to fraction form
    362,869.75/500,021.75 = 280,698.79/x
  3. Step 3: Cross multiply
    362,869.75x = 500,021.75 × 280,698.79
  4. Step 4: Simplify right side
    362,869.75x = 140,355,498,795.19
  5. Step 5: Solve for x
    x = 140,355,498,795.19/362,869.75
  6. Step 6: Final answer
    x = 386,793.05

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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.