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Finding the Fourth Proportional to 379,568, 523,758.48 and 209,779.04

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Solution

The fourth proportional to 379,568, 523,758.48 and 209,779.04 is: 289,470.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,568 : 523,758.48 = 209,779.04 : x
  2. Step 2: Convert to fraction form
    379,568/523,758.48 = 209,779.04/x
  3. Step 3: Cross multiply
    379,568x = 523,758.48 × 209,779.04
  4. Step 4: Simplify right side
    379,568x = 109,873,551,126.26
  5. Step 5: Solve for x
    x = 109,873,551,126.26/379,568
  6. Step 6: Final answer
    x = 289,470.01

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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.