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Finding the Fourth Proportional to 354,709.01, 489,426.72 and 225,698.69

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Solution

The fourth proportional to 354,709.01, 489,426.72 and 225,698.69 is: 311,418.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,709.01 : 489,426.72 = 225,698.69 : x
  2. Step 2: Convert to fraction form
    354,709.01/489,426.72 = 225,698.69/x
  3. Step 3: Cross multiply
    354,709.01x = 489,426.72 × 225,698.69
  4. Step 4: Simplify right side
    354,709.01x = 110,462,969,555.00
  5. Step 5: Solve for x
    x = 110,462,969,555.00/354,709.01
  6. Step 6: Final answer
    x = 311,418.56

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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.