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Finding the Fourth Proportional to 383,043.81, 528,595.50 and 210,958.50

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Solution

The fourth proportional to 383,043.81, 528,595.50 and 210,958.50 is: 291,120.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,043.81 : 528,595.50 = 210,958.50 : x
  2. Step 2: Convert to fraction form
    383,043.81/528,595.50 = 210,958.50/x
  3. Step 3: Cross multiply
    383,043.81x = 528,595.50 × 210,958.50
  4. Step 4: Simplify right side
    383,043.81x = 111,511,713,786.75
  5. Step 5: Solve for x
    x = 111,511,713,786.75/383,043.81
  6. Step 6: Final answer
    x = 291,120.00

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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.