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Finding the Fourth Proportional to 383,609.15, 575,579.70 and 205,908.65

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Solution

The fourth proportional to 383,609.15, 575,579.70 and 205,908.65 is: 308,952.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,609.15 : 575,579.70 = 205,908.65 : x
  2. Step 2: Convert to fraction form
    383,609.15/575,579.70 = 205,908.65/x
  3. Step 3: Cross multiply
    383,609.15x = 575,579.70 × 205,908.65
  4. Step 4: Simplify right side
    383,609.15x = 118,516,838,994.41
  5. Step 5: Solve for x
    x = 118,516,838,994.41/383,609.15
  6. Step 6: Final answer
    x = 308,952.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.